Multivariable Multinomial Logistic Regression Research Articles

Age at natural menopause and associated factors with early and late menopause among Chinese women in Zhejiang province: A cross-sectional study.

Menopause is a significant life transition for women, impacting their physical and psychological health. The age at natural menopause (ANM) and its associated factors have differed by race and region. This study aimed to investigate ANM and associated factors of early and late menopause among Chinese women in Zhejiang province. A cross-sectional study was conducted using a multi-stage stratified cluster sampling method to recruit 8,006 women aged 40-69 years who had resided in Zhejiang province for over 6 months between July 2019 and December 2021. Self-reported ANM and sociodemographics, lifestyle behaviors, reproductive history, and health-related factors were collected using questionnaires in face-to-face surveys. ANM were categorized into three groups: early menopause (<45 years), normal menopause (45-54 years), and late menopause (≥55 years). Kaplan-Meier survival analysis was utilized to calculate the median ANM. Multivariable multinomial logistic regression was employed to explore the associated factors of early menopause and late menopause. A total of 6,047 women aged 40-69 years were included for survival analysis, with 3,176 of them for the regression analysis. The overall median ANM was 51 years (Inter-quartile range [IQR]: 51-52). Women who were smokers (odds ratio [OR]:4.54, 95% confidence interval [CI]:1.6-12.84), had irregular menstrual cycles (OR:1.78, 95% CI:1.12-2.83) and hypertension (OR:1.55, 95% CI:1.09-2.21) had a higher odds ratio of early menopause, while central obesity (OR:1.33, 95% CI:1.03-1.73) and hyperlipidemia (OR:1.51, 95% CI:1.04-2.18) were factors associated with late menopause. This study revealed the associations between ANM and various factors among Chinese women. These factors included socio-demographic factors such as age; life behavior factors like current or prior smoking status; reproductive history factors such as irregular menstrual cycles, miscarriages, and breastfeeding; and health-related factors like central adiposity, hypertension, and hyperlipidemia. These findings provided a basis for understanding factors associated with ANM.

Neighborhood-level racialized socioeconomic deprivation and contraceptive use in the United States, 2011-2019.

The social and structural environments where people live are understudied in contraceptive research. We assessed if neighborhood measures of racialized socioeconomic deprivation are associated with contraceptive use in the United States. We used restricted geographic data from four waves of the National Survey of Family Growth (2011-2019) limited to non-pregnant women ages 15-44 who had sex in the last 12 months. We characterized respondent neighborhoods (census tracts) with the Index of Concentration at the Extremes (ICE), a measure of spatial social polarization, into areas of concentrated privilege (predominantly white residents living on high incomes) and deprivation (predominantly people of color living on low incomes). We used multivariable binary and multinomial logistic regression with year fixed effects to estimate adjusted associations between ICE tertile and contraceptive use and method type. We also assessed for an interactive effect of ICE and health insurance type. Of the 14,396 respondents, 88.4% in neighborhoods of concentrated deprivation used any contraception, compared to 92.7% in the most privileged neighborhoods. In adjusted models, the predicted probability of using any contraception in neighborhoods of concentrated deprivation was 2.8 percentage points lower than in neighborhoods of concentrated privilege, 5.0 percentage points higher for barrier/coital dependent methods, and 4.3 percentage points lower for short-acting methods. Those with Medicaid were less likely to use any contraception than those with private insurance irrespective of neighborhood classification. This study highlights the salience of structural factors for contraceptive use and the need for continued examination of structural oppressions to inform health policy.

Maternal pre-pregnancy body mass index and related factors: A cross-sectional analysis from the Japan Environment and Children's Study.

Socioeconomic status and smoking are reportedly associated with underweight and obesity; however, their associations among pregnant women are unknown. This study aimed to investigate whether socioeconomic factors, namely educational attainment, household income, marital status, and employment status, were associated with pre-pregnancy body mass index (BMI) categories, including severe-moderate underweight (BMI ≤ 16.9 kg/m2), mild underweight (BMI, 17.0-18.4 kg/m2), overweight (BMI, 25.0-29.9 kg/m2), and obese (BMI ≥ 30.0 kg/m2) among Japanese pregnant women using data from the Japan Environment and Children's Study (JECS). In total, pregnant women were included 96,751. Age- and parity-adjusted multivariable multinomial logistic regression analyses assessed socioeconomic factors and smoking associations with falling within abnormal BMI categories (normal BMI as the reference group). Lower education and lower household were associated with overweight and obesity, and, especially, lowest education and household income had relatively higher point estimate relative ratios (RRs) of 3.97 and 2.84, respectively. Regarding the risks for underweight, however, only junior high school education had a significantly higher RR for severely to moderately underweight. Regarding occupational status, homemakers or the unemployed had a higher RR for severe-moderate underweight, overweight, and obesity. Unmarried, divorced, or bereaved women had significantly higher RRs for mildly underweight status. Quitting smoking early in pregnancy/still smoking had higher RRs for all four not having normal BMI outcomes; however, quitting smoking before pregnancy had a higher RR only for obese individuals. Lower educational attainment and smoking are essential intervention targets for obesity and severe-moderate underweight prevention in younger women. Lower household income is also a necessary target for obesity.

Precise health perspectives: Unraveling the interplay of reproductive factors in hormone receptor–positive and triple-negative breast cancer among Bangladeshi women.

e22503 Background: Breast cancer is a major cause of cancer-related deaths in Bangladesh, with an incidence rate of 22.5 per 100,000 females per year. Urbanization is linked to the increasing incidence of breast cancer, altering lifestyles and reproductive behaviors. Reproductive factors play a key role in breast cancer risk, with variations between TNBC and Hr+BC. This study aims to investigate the relationship between TNBC and Hr+BC and reproductive factors among Bangladeshi women to provide valuable insights for breast cancer prevention and management in the region. Methods: Conducted in a tertiary hospital-based setting, our survey included 1000 adult Bangladeshi females aged 18 or older. Among them, 250 had TNBC, 250 had Hr+BC, and the remaining 500 were non-cancer individuals. Propensity score matching (PSM) was utilized to match the age and age of menarche of 500 healthy individuals with 250 TNBC and 250 Hr+BC individuals separately. The presence of TNBC or Hr+BC was confirmed through participants' previous histopathology reports. Detailed reproductive characteristics and demographics were collected using a structured questionnaire. Significant variables identified in the bivariate model were included in the adjusted multivariable multinomial logistic regression. Results: Demographic and reproductive characteristics in the Hr+BC, TNBC, and healthy groups were analyzed. The mean ±SEM age was Hr+BC (44.96±0.65), TNBC (42.74±0.65), and healthy (39.31±0.55) years. Patients with Hr+BC and TNBC, compared to healthy individuals, were older, with delayed first marriage and first birth, and more abortions. Both demographic and reproductive factors correlated with Hr+BC and TNBC, with higher likelihood in postmenopausal, irregular menstruation, vaginal delivery, breastfeeding &gt; 6 months, and hormonal contraceptive use. Reproductive factors associated with Hr+BC and TNBC risk were outlined. The adjusted model revealed delayed menarche increased Hr+BC risk by 1.71 times (OR 1.71, 95% CI 1.19-2.44) but decreased TNBC risk by 30% (OR 0.70, 95% CI 0.52-0.95). Longer time between first marriage and first birth (OR 1.40, CI 95% 1.10-1.78), irregular menstruation (OR 2.83, 95% CI 1.31-6.10), and hormonal contraceptive use (OR 5.68, 95%1.52-21.25) increased Hr+BC risk; pre-obesity decreased risk (OR 0.36 95% CI 0.18-0.72). Irregular menstruation (OR 4.30, 95% CI1.87-9.42) and hormonal contraceptive use (OR 8.54, 95% CI 1.81-40.14) increased TNBC risk. Higher abortions raised TNBC risk (OR 2.27, 95% CI 01.30-3.98) but not Hr+BC. Living in rural Bangladesh increased risk for both Hr+BC (4.81 times) and TNBC (16.77 times). Conclusions: Our findings highlight the significant impact of reproductive factors on Hr+BC and TNBC development in Bangladeshi women, emphasizing variations in risk profiles among different breast cancer types.

Coprevalence and associations of diabetes mellitus and hypertension among people living with HIV/AIDS in Cameroon

BackgroundThe association between HIV infection and increased cardiometabolic risk, attributed to chronic inflammation in people living with HIV (PLWH) and/or antiretroviral therapy (ART) effects, has been inconsistent. In this study, we aimed to assess the associations of HIV-related factors with hypertension (HTN) and type-2 diabetes mellitus (T2DM), and the potential mediation effects of body mass index (BMI) in the associations between ART use and HTN or T2DM in PLWH in Cameroon.MethodsA cross-sectional study was conducted with 14,119 adult PLWH from Cameroon enrolled in the International epidemiology Databases to Evaluate AIDS (IeDEA) between 2016 and 2021. HTN was defined as systolic/diastolic blood pressure ≥ 140/90 mmHg and/or current use of antihypertensive medication, while T2DM was defined as fasting blood sugar ≥ 126 mg/dL and/or use of antidiabetic medications. Univariable and multivariable multinomial logistic regression analyses examined the associations of factors with HTN alone, T2DM alone, and both (HTN + T2DM). Mediation analyses were conducted to assess the potential mediation roles of BMI, while controlling for age, sex, and smoking.ResultsOf the 14,119 participants, 9177 (65%) were women, with a median age of 42 (25th–75th percentiles: 35–51) years. Age > 50 years was associated with HTN alone, T2DM alone, and HTN + T2DM compared to the age group 19–29 years. Men had higher odds of having HTN + T2DM. Overweight and obesity were predictors of HTN alone compared to being underweight. WHO stages II and III HIV disease were inversely associated with HTN alone compared to stage I. The odds of diabetes alone were lower with ART use. BMI partially mediated the association between ART use and hypertension, with a proportion of mediation effect of 49.6% (all p < 0.02). However, BMI did not mediate the relationship between ART use and diabetes.ConclusionsTraditional cardiovascular risk factors were strongly associated with hypertension among PLWH, while HIV-related exposures had smaller associations. BMI partially mediated the association between ART use and hypertension. This study emphasizes the importance of screening, monitoring, and managing HTN and T2DM in older, male, and overweight/obese PLWH. Further research on the associations of HIV disease stage and ART use with HTN and T2DM is warranted.

Association between hoof trimming frequency in primiparous cows and hoof health and survival in second lactation

Lameness, mostly resulting from claw lesions, causes major welfare problems in the dairy industry. One way to prevent claw lesions is hoof trimming, but the overall effect and the optimal hoof trimming frequency are unknown. In a retrospective cohort study, we investigated the association between hoof trimming frequency in primiparous cows and hoof health and culling in second lactation. We based our analysis on breed, calving and culling data in the period 2015-2018 for 30,613 primiparous cows in 202 Swedish dairy herds. Of the cows enrolled, 20% were not hoof-trimmed, 30% were trimmed once, 34% were trimmed twice, 13% were trimmed 3 times, and 2% were trimmed ≥ 4 times. We used multivariable mixed-effect logistic and multivariable multinomial logistic regression models to investigate the association between trimming frequency and 2 outcomes: hoof lesions at first trimming occasion within 90 d from second calving and culling in second lactation within 300 d after second calving. In general, cows trimmed 2 or 3 times during first lactation were at lower odds of having claw lesions compared with cows that were not trimmed (Odds Ratio (OR) = 0.66, 95% CI = 0.62-0.71 and 0.60, 95% CI = 0.55-0.66, respectively) or cows trimmed once (OR = 0.80, 95% CI = 0.75-0.85 and OR = 0.72, 95% CI = 0.66-0.79, respectively), and this beneficial effect was observed for most types of claw lesions. Moreover, cows trimmed 2, 3, or ≥ 4 times were at lower odds of being culled compared with cows that were not trimmed (OR = 0.71, 95% CI = 0.65-0.77, 0.68, 95% CI = 0.61-0.76 and 0.70, 95% CI = 0.54-0.90, respectively) or trimmed once (OR = 0.77, 95% CI = 0.71-0.83, OR = 0.74, 95% CI = 0.66-0.82 and OR = 0.75, 95% CI = 0.59-0.97, respectively). In particular, 2 trimmings, compared with 1 or no trimming, lowered the relative risk-ratio of dying or being euthanized on-farm, or being culled due to claw and leg disorders. More than 1 hoof trimming in first lactation also reduced the relative-risk ratio of being culled for other reasons. In conclusion, 2 or 3 hoof trimmings during first lactation were generally beneficial for hoof health in early second lactation and survival in second lactation. These findings can help improve animal welfare and production by reducing claw lesions, and thereby lameness among dairy cows, which would increase the longevity of dairy cows and the sustainability of the dairy industry.

Prevalence of Cigarette Smoking, E-cigarette Use, and Dual Use Among Urban and Rural Women During the Peripartum Period, PRAMS 2015-2020.

Evidence has emerged on the health dangers of electronic cigarette (e-cigarette) use among pregnant women and neonates. We examined whether rural residence is a risk factor for smoking and e-cigarette use among women during the peripartum period in the United States. This study was based on pooled cross-sectional 2015-2020 data from the Pregnancy Risk Assessment Monitoring System. The outcome was exclusive smoking, exclusive e-cigarette use, and use of both products (ie, dual use) versus use of neither tobacco product by women with live infants aged 2 to 6 months. We examined rural-urban differences in outcome by using univariate and multivariable multinomial logistic regressions with post hoc contrasts and marginal analyses, adjusting for complex survey design and nonresponse. During the peripartum period, 5.0% of women were smoking combustible cigarettes, 5.0% were using e-cigarettes, and 1.9% were using both tobacco products. The crude prevalence of e-cigarette use was 1.1 percentage point higher, and the adjusted prevalence was 0.8 percentage points lower for rural versus urban women (P < .001 for both). Among rural women, 6.7% (95% CI, 6.3%-7.1%) smoked combustible cigarettes exclusively and 2.6% (95% CI, 2.3%-2.8%) used both products, as compared with 4.5% (95% CI, 4.4%-4.8%) and 1.7% (95% CI, 1.6%-1.8%) of urban women, respectively, adjusting for sociodemographic and health-related characteristics. Maternal sociodemographic and health-related characteristics differed by combustible smoking versus e-cigarette use during the peripartum period. The effect of residence on e-cigarette use was significantly confounded by sociodemographic and health-related characteristics, resulting in clinically comparable prevalence of e-cigarette use in rural and urban mothers with live infants aged 2 to 6 months.

#2870 Association between frailty and a history of falls in patients on hemodialysis

Abstract Background and Aims Patients with end-stage renal disease on hemodialysis have a higher prevalence of frailty that is associated with relevant outcomes such as disability, hospitalization, and mortality. Moreover, these patients have musculoskeletal and physical function impairments that contribute to a higher risk of falling. Therefore, the aim of this study was to evaluate the association between frailty and a history of falls in patients on hemodialysis. Method This cross-section multicenter study included patients aged ≥18 years who were undergoing regular hemodialysis treatment for at least three months. Patients were excluded if presented severe and unstable comorbidities, psychiatric or cognitive disorders, and physical limitations including neurological, musculoskeletal and osteoarticular diseases which prevented the correct execution of the physical function tests. Frailty was assessed by Fried phenotype and the criteria were as follows: unintentional weight loss ≥ 4.5 kg in the past year; exhaustion was assessed using the vitality domain of the SF-36 quality of life questionnaire; weakness was measured using a handgrip dynamometer; walking speed was assessed by timing the 4.6 m distance covered at the participant's normal pace; and physical activity level was measured by the Human Activity Profile questionnaire. Patients were stratified into three groups: a score of 0/5 for non-frail, a score of 1-2/5 for pre-frail, and a score of 3-5/5 for frail. The retrospective history of falls was assessed for the last 12 months, and a fall was defined as an “unexpected event in which the individual comes to rest on the ground, floor or lower level”. The association between frailty stratification and a history of falls was analyzed using multivariate multinomial logistic regression model with non-frail group as reference. Then, a model adjusted for potential confounders was constructed. Results This study included 199 patients (59.1 ± 12.5 years, 41.2% female). The prevalences of frailty and pre-frailty were 17.6% and 54.8%, respectively. Patients classified as non-frail showed lower prevalence of a history of falls compared to patients classified as pre-frail and frail (26%, 36% and 54%, respectively, p &amp;lt; 0.001). The absence of a history of falls decreased the chance of patients being classified as frail (OR = 0.23, 95% CI = 0.07-0.78, p = 0.018). After adjusting for age, educational level, time on dialysis, hemoglobin and presence of cardiovascular disease, this association remained significant (OR = 0.16, 95% CI = 0.04-0.57, p = 0.005). Conclusion The prevalence of pre-frailty was approximately three times higher than that of frailty in patients on hemodialysis. A history of falls was associated with frailty in these patients.

Association between sedentary behavior and dynapenic abdominal obesity among older adults from low- and middle-income countries

BackgroundSedentary behavior, or time spent sitting, may increase risk for dynapenic abdominal obesity (DAO), but there are currently no studies on this topic.AimsTherefore, we investigated the association between sedentary behaviour and DAO in a nationally representative sample of older adults from six low- and middle-income countries.MethodsCross-sectional data from the Study on Global AGEing and Adult Health were analysed. Dynapenia was defined as handgrip strength < 26 kg for men and < 16 kg for women. Abdominal obesity was defined as waist circumference of > 88 cm (> 80 cm for Asian countries) for women and > 102 cm (> 90 cm) for men. DAO was defined as having both dynapenia and abdominal obesity. Self-reported sedentary behavior was categorized as ≥ 8 h/day (high sedentary behaviour) or < 8 h/day. Multivariable multinomial logistic regression was conducted.ResultsData on 20,198 adults aged ≥ 60 years were analyzed [mean (SD) age 69.3 (13.1) years; 54.1% females]. In the overall sample, ≥ 8 h of sedentary behavior per day (vs. <8 h) was significantly associated with 1.52 (95%CI = 1.11–2.07) times higher odds for DAO (vs. no dynapenia and no abdominal obesity), and this was particularly pronounced among males (OR = 2.27; 95%CI = 1.42–3.62). Highly sedentary behavior was not significantly associated with dynapenia alone or abdominal obesity alone.DiscussionHigh sedentary behaviour may increase risk for DAO among older adults.ConclusionsInterventions to reduce sedentary behaviour may also lead to reduction of DAO and its adverse health outcomes, especially among males, pending future longitudinal research.

Endophenotypes of Primary Osteoarthritis of the Hip Joint in the Bulgarian Population over 60 Years Old.

Aim. To identify subgroups of patients with primary osteoarthritis of the hip joint (pHOA) with similar imaging and laboratory findings, disease evolution, and response to conventional therapies. Methods. We performed further statistical analyses on patient data from two published, double-blind, randomized, and placebo-controlled studies (DB-RCTs), which examined the effects of intra-articular corticosteroids (ia-CSs), hyaluronic acid (ia-HA)-KИ-109-3-0008/14.01.2014, and intravenous bisphosphonates (iv-BPs) -KИ- 109-3-0009/14.01.2014 compared to the country's standard pHOA therapy. The data span an 8-year follow-up of 700 patients with pHOA, including: 1. Clinical parameters (WOMAC-A, B, C, and T; PtGA). 2. Laboratory markers (serum calcium and phosphate levels; 25-OH-D and PTH, markers for bone sCTX-I and cartilage uCTX-II turnover). 3. Radiological indicators: X-ray stage (Kellgren-Lawrence (K/L) and model (Bombelli/OOARSI), width (mJSW), speed (JSN mm/year), and zone of maximum narrowing of the joint space (max-JSN)-determining the type of femoral head migration (FHM). 4. DXA indicators: bone geometry (HAL; NSA; and MNW); changes in regional and total bone mineral density (TH-BMD, LS-BMD, and TB-BMD). 5. Therapeutic responses (OARSI/MCII; mJSW; JSNmm/yearly) to different drug regimens (iv-BP -zoledronic acid (ZA/-5 mg/yearly for 3 years)); ia-CS 40 mg methylprednisolone acetate, twice every 6 months; and ia-HA with intermediate molecular weight (20 mg/2 mL × 3 weekly applications, two courses every 6 months) were compared to standard of care therapy (Standard of Care/SC/), namely D3-supplementation according to serum levels (20-120 ng/mL; target level of 60 ng/mL), simple analgesics (paracetamol, up to 2.0 g/24 h), and physical exercises. The abovementioned data were integrated into a non-supervised hierarchical agglomerative clustering analysis (NHACA) using Ward's linkage method and the squared Euclidean distance to identify different endophenotypes (EFs). Univariate and multivariate multinomial logistic regression analyses were performed to determine the impact of sex and FHM on clinical and radiographic regression of pHOA. Results. A baseline cluster analysis using incoming (M0) patient data identified three EFs: hypertrophic H-HOA, atrophic A-HOA, and intermediate I-HOA. These EFs had characteristics that were similar to those of patients grouped by radiographic stage and pattern ('H'-RPs, 'I'-RPs, and 'A'-RPs), p < 0.05). The repeated cluster analysis of M36 data identified four EF pHOAs: 1. Hypertrophic (slow progressors, the influence of the type of femoral head migration (FHM) outweighing the influence of sex on progression), progressing to planned total hip replacement (THR) within 5 (K/LIII) to 10 (K/LII) years. 2. Intermediate (sex is more important than the FHM type for progression) with two subgroups: 2#: male-associated (slow progressors), THR within 4 (K/LIII) to 8 years. (K/LII). 2* Female-associated (rapid progressors), THR within 3 (K/LIII) to 5 (K/LII) years. 3. Atrophic (rapid progressors; the influence of FHM type outweighs that of sex), THR within 2 (K/LIII) to 4 (K/LII) years. Each EF, in addition to the patient's individual progression rate, was also associated with a different response to the aforementioned therapies. Conclusions. Clinical endophenotyping provides guidance for a personalized approach in patients with pHOA, simultaneously assisting the creation of homogeneous patient groups necessary for conducting modern genetic and therapeutic scientific studies.

Social and Structural Determinants of Health Associated with COVID-19 Vaccine Hesitancy among Older Adults in the United States.

State-level COVID-19 vaccination rates among older adults have been uneven in the United States. Due to the immunocompromised nature of older adults, vaccine hesitancy increases the risk of morbidity and mortality. This study aims to determine the association between the social determinants of health, the structural determinants of health, and COVID-19 vaccine hesitancy among older adults in the United States. Secondary data from the Health and Retirement Study (HRS) dataset were used. A descriptive analysis and multinomial multivariable logistic regression were performed to examine the association of the independent variables-gender, age, race, immigration status, marital status, broadband internet access, social security income, Medicare coverage, education, and frequency of religious service-with the dependent variable, vaccine hesitancy. Compared to the respondents with no vaccine hesitancy and without the specific predictor, the respondents who reported religious attendance at least once/week were more likely to be "somewhat hesitant", divorced respondents had higher odds of being "somewhat hesitant", and older adults aged 65-74 years were more likely to be "very hesitant" or "somewhat hesitant" about the COVID-19 vaccine. Compared to the respondents with no vaccine hesitancy and without the specific predictor, females had higher odds of being "very hesitant", "somewhat hesitant", or a "little hesitant", and African Americans were more likely to be "very hesitant", "somewhat hesitant", or a "little hesitant" about the COVID-19 vaccine. Addressing these factors may limit the barriers to vaccine uptake reported among older adults and improve herd immunity among the immunocompromised population.

Exploring landscape of measles vaccination coverage: A step towards measles elimination goal in India

IntroductionMeasles remains a critical public health concern causing significant morbidity and mortality globally. Despite the success of measles vaccination programs, challenges persist, particularly in India. This study investigates dose-wise measles vaccination coverage and explores gaps in immunization focusing on zero-dose, one-dose, and two-dose coverage among children aged 24–35 months. Data sources and methodologyThe National Family Health Survey 2019–21 (NFHS-5) served as the data source and the study analyzed information from 43,864 children aged 24–35 months. Sociodemographic variables such as birth order, wealth quintile, gender, social group, religion, residence, mother education, delivery-related factors, and media exposure were considered. Statistical analysis involved weighted estimates, chi-square tests, and multivariate multinomial logistic regression. ResultsThe study revealed that challenges persist in achieving optimal measles vaccination coverage. Analysis by sociodemographic factors highlighted disparities in coverage, with variations in zero dose prevalence across states and districts. The percentage of zero-dose children was significantly higher, with 11.5% of children in India remaining to receive any measles vaccination. Factors influencing vaccine coverage include birth order, age, wealth quintile, social group, religion, residence, maternal education, place of delivery, media exposure, and mode of delivery. The findings from the spatial analysis show the clustering of zero-dose children is high in the northeastern states of India. DiscussionMeasles zero-dose children pose a significant obstacle to achieving elimination goals. Spatial analysis identifies clusters of unvaccinated populations guiding targeted interventions. The study aligns with global initiatives such as the Immunization Agenda 2030 emphasizing equitable vaccine access and discusses how India can tailor its strategies to achieve the goal. Lessons from polio eradication efforts inform strategies for measles elimination, stressing the importance of high-quality data and surveillance. The study underscores the urgency of addressing last-mile measles vaccination gaps in India. Spatially targeted interventions informed by sociodemographic factors can enhance immunization coverage. Achieving measles elimination requires sustained efforts and leveraging lessons from successful vaccination campaigns. The study findings have the potential to contribute to informed decision-making, supporting India's roadmap for the measles and rubella elimination goal.

Abstract PO2-12-01: Five-year quality of life (QOL) trajectories among young breast cancer (BC) survivors

Abstract Background: Young BC survivors are at risk for impaired QOL in part due to issues that are unique to their life stage. We sought to characterize trajectories of QOL in the 5 years following diagnosis among young BC survivors as well as evaluate patient and clinical characteristics associated with poorer or deteriorating QOL trajectories over time. Methods: Women diagnosed with stage I-III BC at age ≤40 enrolled in the Young Women’s BC Study, a prospective cohort in North America, who completed ≥2 study surveys through 5 years of post-diagnosis follow-up. QOL was evaluated with the Cancer Rehabilitation Evaluation System (CARES) physical, psychosocial, and sexual subscale scores. Demographic, treatment, and clinical characteristics were ascertained through surveys and chart review. Longitudinal trajectories for each CARES subscale were defined using group-based trajectory modeling; associations between patient/clinical characteristics and trajectory group membership were estimated for each subscale using multivariable multinomial logistic regression. Results: Among 900 women, median age at diagnosis was 36 (range: 17-40) 89% were white, 2% Black, and 4% Hispanic. At baseline, 73% were partnered, 61% parous and 49% perceived themselves as financially comfortable. Most had hormone-receptor positive (74%), HER2-negative (70%) BC, and most received chemotherapy (82%); 36% underwent mastectomy with radiation. Physical and psychosocial scores each clustered into 4 trajectories, with &amp;gt;75% of participants clustering in groups reflecting excellent or good QOL that was stable over time and few (6% for physical and 4% for psychosocial) clustering into groups that reflected poorer QOL at baseline that did not improve over time. Sexual health trajectories were more variable, clustering into 5 trajectories, with over half of participants clustered into groups reflecting good (35%) or excellent (20%) QOL that remained relatively stable over time, 22% clustered into a trajectory that was poor at baseline but moderately improved over follow-up, 13% in a group that reflected deteriorating from moderate-to-poor QOL and 11% in a group with poor QOL at baseline that did not improve over time. In multivariable regression analyses (Table), factors associated with clustering in a poorer trajectory (vs. clustering in an excellent trajectory), in multiple QOL domains included baseline financial discomfort (associated with poorer QOL across all 3 domains), mastectomy+radiation (vs. lumpectomy, associated with poorer QOL across all 3 domains); chemotherapy receipt (associated with poorer physical and sexual health trajectories); and baseline BMI &amp;gt;25 (vs. 18.5-24.9, associated with poorer physical and poorer/deteriorating sexual health trajectories). Conclusions: Young BC survivors follow distinct QOL trajectories in survivorship. While most will not experience substantial QOL impairment through the first 5 years following diagnosis, a substantial minority report persistently poor or deteriorating QOL. The association between more extensive local therapy and poorer physical/psychosocial/sexual health trajectories underscores the importance of communicating the potential for negative QOL outcomes when women are making surgical decisions. Additionally, the pervasive impact of financial wellbeing on multiple QOL domains supports the potential value of systematic screening for and addressing of financial distress to prevent or mitigate financial toxicity in survivorship Factors associated with clustering in poorer/deteriorating (vs. excellent) QOL trajectories *Reference trajectory=excellent QOL Citation Format: Tal Sella, Zheng Yue, Kathryn Ruddy, Shari Gelber, Rulla Tamimi, Jeffrey Peppercorn, Lidia Schapira, Virginia Borges, Steven Come, Eric Winer, Ann Partridge, Shoshana Rosenberg. Five-year quality of life (QOL) trajectories among young breast cancer (BC) survivors [abstract]. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO2-12-01.

Abstract PO5-15-02: Integration of synonymous mutations and variants of unknown significance for basal and longitudinal characterization of metastatic breast cancer by circulating tumor DNA

Abstract Background: Despite how commonly synonymous mutations (SYN) and unknown significance (VUS) are detected in tissue and circulating tumor DNA (ctDNA) next-generation sequencing (NGS), the potential for these somatic changes to impact personalized approaches in metastatic breast cancer (MBC) is unclear. Emerging evidence suggests that SYN mutations may play a role in cancer biology through changes in mRNA stability, splicing, and gene expression. The aim of this study was to characterize SYN and VUS in a large multicenter consortium and to analyze their interplay with pathogenic variants (PATH). Methods: The study retrospectively analyzed a multi-institutional cohort comprising 1189 patients with MBC characterized for ctDNA using NGS (Guardant360™, Guardant Health) before treatment start (BL) and at disease progression (PD). Pathway classification was defined based on prior research (Sanchez-Vega F et al, Cell. 2018). Single Nucleotide Variations (SNVs) were annotated for oncogenicity (OncoKB) and protein domain (UniProtKB). Associations between clinical characteristics and pathway classifications for SYN and VUS were explored by multinomial logistic regression; survival was tested through Cox regression in terms of overall survival (OS). Results: Hormone-receptor positive (HR+)/HER2 negative (luminal-like) was the most represented subtype (68.7%) followed by HER2-positive (14.6%), and triple-negative (TNBC) (16.7%). PATH were mainly detected in the TP53 DNA binding domain, ESR1 ligand binding domain, helical and catalytic domains of PIK3CA, SYN in the ligand binding domain of ESR1, MET Sema, KIT protein kinase domain, and FGFR1 Ig-like C2-type 1. In contrast, VUS were mainly found in the ESR1 ligand binding domain, MET Sema, ATM PI3K/PI4K catalytic domain, DDR2 Protein kinase and PIK3CA C2 PI3K-type. Analyzing pathways, after multivariable multinomial logistic regression, RAS SYN, PI3K and ESR PATH were significantly associated with HER2+ MBC (respectively RRR=4.14, P=0.046; RRR = 0.474, P &amp;lt; 0.001 and RRR = 0.306, P &amp;lt; 0.001). TNBC was associated with PATH PI3K (RRR = 0.366, P &amp;lt; 0.001), PATH P53 (RRR = 4.71, P &amp;lt; 0.001) and PATH RAS (RRR = 0.362, P = 0.026, 95% CI 0.147 - 0.888). In luminal-like MBC, a significant impact on OS was observed for SYN P53 (HR = 2.53, P = 0.008) and PATH ER (HR = 1.54, P &amp;lt; 0.001), PATH P53 (HR = 1.56, P &amp;lt; 0.001), PATH cell-cycle (HR = 1.64, P = 0.0299), and PATH RAS (HR = 1.62, P = 0.010). An impact on OS was observed in TNBC for SYN cell-cycle (HR = 5.41, P = 0.006), VUS ESR (HR = 2.87, P = 0.018), PATH P53 (HR = 1.84, P = 0.012) and PATH cell-cycle (HR = 5.07, P &amp;lt; 0.001). VUS MYC (HR = 38.5, P = 0.001) and PATH PI3K3 (HR = 2.32, P = 0.022) were significant among HER2 positive. Differences in SYN, VUS and PATH alterations were then compared between baseline and progressive disease. While a significant increase in mutant allele frequency (MAF) was observed for PATH (P=0.0010) and VUS (P=0.0152) at PD, no differences were highlighted for SYN (P=0.8362). Conclusions: In our cohort we characterized the MBC for PATH, VUS and SYN utilizing the ctDNA. In this study, considering the complex genomic landscape of MBC, we demonstrated that both SYN and VUS mutations had an impact on the survival outcome. Therefore, further analysis to validate the prognostic and predictive role of SYN and VUS, with or without PATH mutations, are needed to better characterize and monitoring of MBC through ctDNA. Moreover, functional studies are needed to better understand their role in the nuanced biology of MBC. Citation Format: Elisabetta Molteni, Carolina Reduzzi, Andrew Davis, Lorenzo Foffano, Arielle Medford, Katherine Clifton, Whitney L. Hensing, Marko Velimirovic, Ami N. Shah, Laura Munoz Arcos, Charles S. Dai, Jennifer C. Keenan, Elyssa Denault, William Gradishar, Giuseppe Damante, Amir Behdad, Lorenzo Gerratana, Fabio Puglisi, Cynthia Ma, Aditya Bardia, Massimo Cristofanilli. Integration of synonymous mutations and variants of unknown significance for basal and longitudinal characterization of metastatic breast cancer by circulating tumor DNA [abstract]. In: Proceedings of the 2023 San Antonio Breast Cancer Symposium; 2023 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2024;84(9 Suppl):Abstract nr PO5-15-02.

Do advanced cancer patients and their caregivers agree on preferred place of patient's death?-a prospective cohort study of patient-caregiver dyads.

Greater patient-caregiver concordance for preferred place of death can increase the chances of patients dying at their preferred place, thus improving quality of life at end-of-life (EOL). We aimed to assess changes in and predictors of patient-caregiver concordance in preference for home death at EOL during the last 3 years of life of patients with advanced cancer. We used data from the Cost of Medical Care of Patients with Advanced Serious Illness in Singapore (COMPASS) cohort study of patients with stage IV solid cancer. We interviewed patients and their caregivers every 4 months to assess their preference for home death (for patient), and patient (symptom burden, inpatient usage, financial difficulties) and caregiver (psychosocial distress, spiritual wellbeing, competency and perceived lack of family support) characteristics. We used data from patients' last 3 years of life. We used multivariable multinomial logistic regressions to predict dyad concordance for preference for home death. A total of 227 patient-caregiver dyads were analyzed. More than half of the patient-caregiver dyads observations were concordant in their preference for home death (54%). Concordance for home death declined closer to death (from 68% to 44%). Concordant dyads who preferred home death were less likely to include older patients [relative risk ratio, 0.97; P=0.03]. Dyads who preferred a non-home death (hospital, hospice, nursing home, unsure or others) were more likely to include patients with greater symptom burden (1.08; P=0.007) and with spousal caregivers (2.59; P=0.050), and less likely to include caregivers with greater psychosocial distress (0.90; P=0.003) and higher spiritual wellbeing (0.92; P=0.007). This study provides evidence of the dynamic changes in preference for home death among patient-caregiver dyads during last 3 years of patients' life. Understanding the EOL needs of older patients, optimizing home-based symptom control and better caregiver support are recommended to increase likelihood of dyad concordance for home death.

Multilevel multinomial regression analysis of factors associated with birth weight in sub-Saharan Africa

Birth weight significantly determines newborns immediate and future health. Globally, the incidence of both low birth weight (LBW) and macrosomia have increased dramatically including sub-Saharan African (SSA) countries. However, there is limited study on the magnitude and associated factors of birth weight in SSA. Thus, thus study investigated factors associated factors of birth weight in SSA using multilevel multinomial logistic regression analysis. The latest demographic and health survey (DHS) data of 36 sub-Saharan African (SSA) countries was used for this study. A total of a weighted sample of 207,548 live births for whom birth weight data were available were used. Multilevel multinomial logistic regression model was fitted to identify factors associated with birth weight. Variables with p-value < 0.2 in the bivariable analysis were considered for the multivariable analysis. In the multivariable multilevel multinomial logistic regression analysis, the adjusted Relative Risk Ratio (aRRR) with the 95% confidence interval (CI) was reported to declare the statistical significance and strength of association. The prevalence of LBW and macrosomia in SSA were 10.44% (95% CI 10.31%, 10.57%) and 8.33% (95% CI 8.21%, 8.45%), respectively. Maternal education level, household wealth status, age, and the number of pregnancies were among the individual-level variables associated with both LBW and macrosomia in the final multilevel multinomial logistic regression analysis. The community-level factors that had a significant association with both macrosomia and LBW were the place of residence and the sub-Saharan African region. The study found a significant association between LBW and distance to the health facility, while macrosomia had a significant association with parity, marital status, and desired pregnancy. In SSA, macrosomia and LBW were found to be major public health issues. Maternal education, household wealth status, age, place of residence, number of pregnancies, distance to the health facility, and parity were found to be significant factors of LBW and macrosomia in this study. Reducing the double burden (low birth weight and macrosomia) and its related short- and long-term effects, therefore, calls for improving mothers' socioeconomic status and expanding access to and availability of health care.

Aircraft noise exposure and body mass index among female participants in two Nurses’ Health Study prospective cohorts living around 90 airports in the United States

ObjectiveAircraft noise exposure is linked to cardiovascular disease risk. One understudied candidate pathway is obesity. This study investigates the association between aircraft noise and obesity among female participants in two prospective Nurses’ Health Study (NHS and NHSII) cohorts. MethodsAircraft day-night average sound levels (DNL) were estimated at participant residential addresses from modeled 1 dB (dB) noise contours above 44 dB for 90 United States (U.S.) airports in 5-year intervals 1995–2010. Biennial surveys (1994–2017) provided information on body mass index (BMI; dichotomized, categorical) and other individual characteristics. Change in BMI from age 18 (BMI18; tertiles) was also calculated. Aircraft noise exposures were dichotomized (45, 55 dB), categorized (<45, 45–54, ≥55 dB) or continuous for exposure ≥45 dB. Multivariable multinomial logistic regression using generalized estimating equations were adjusted for individual characteristics and neighborhood socioeconomic status, greenness, population density, and environmental noise. Effect modification was assessed by U.S. Census region, climate boundary, airline hub type, hearing loss, and smoking status. ResultsAt baseline, the 74,848 female participants averaged 50.1 years old, with 83.0%, 14.8%, and 2.2% exposed to <45, 45–54, and ≥55 dB of aircraft noise, respectively. In fully adjusted models, exposure ≥55 dB was associated with 11% higher odds (95% confidence interval [95%CI]: −1%, 24%) of BMIs ≥30.0, and 15% higher odds (95%CI: 3%, 29%) of membership in the highest tertile of BMI18 (ΔBMI 6.7 to 71.6). Less-pronounced associations were observed for the 2nd tertile of BMI18 (ΔBMI 2.9 to 6.6) and BMI 25.0–29.9 as well as exposures ≥45 versus <45 dB. There was evidence of DNL-BMI trends (ptrends ≤ 0.02). Stronger associations were observed among participants living in the West, arid climate areas, and among former smokers. DiscussionIn two nationwide cohorts of female nurses, higher aircraft noise exposure was associated with higher BMI, adding evidence to an aircraft noise-obesity-disease pathway.

Dengue hospitalizations and in-hospital mortality changes in trend in Ecuador: a nationwide study from 2015 to 2022

During recent years, dengue infection has spread rapidly within countries and between regions. Rapid rise in the global burden has been related to sociodemographic changes. Objective This study aimed to analyze dengue hospitalizations and in-hospital mortality trends in Ecuador, along with sociodemographic factors influencing adverse outcomes. Methods This study included 31,616 dengue hospitalizations in Ecuador during 2015–2022, of which 115 (0.36%) died. Data were extracted from national hospital registries. Age adjusted rates were calculated, and for the analysis of changes in trend, a Joinpoint regression was performed. Multivariate binary and multinomial logistic regressions were performed for assessing sociodemographic factors influencing dengue adverse outcomes. Results During 2015–2022, the mean age adjusted dengue hospitalization rate was 22.3 per 100,000 inhabitants with 49.41% annual decrease during 2015–2017 and 31.73% annual increase during 2017–2022 with higher rates in 2020 with 31.61, 2021 with 34.42, and 2022 with 25.81. The mean dengue in-hospital mortality rate was 0.08, mortality rates did not show significant changes during 2015–2022. Higher probability of death was observed in ages ≥50 years and ethnic minorities. People living in rural areas exhibited a 64% higher risk for complicated dengue hospitalization. Conclusions It was observed as an important accomplishment in Ecuador’s ongoing efforts to improve healthcare regarding dengue. 0.36% of dengue hospitalizations ended in death which is below the recommended 1%. The increase in dengue hospitalizations in Ecuador during recent years remains a concern. The COVID-19 pandemic might have influenced dengue prevention and vector control to be neglected leading to an increase in cases.

Impact of Chronic Disease Self-Management Program on the Self-Perceived Health of People in Areas of Social Vulnerability in Asturias, Spain.

The Chronic Disease Self-Management Program (CDSMP) focuses on a health promotion perspective with a salutogenic approach, reinforcing the pillars of self-efficacy. The aim of this study was to assess the impact of the CDSMP on Self-perceived Health (SPH) in disadvantaged areas of Asturias, España. The study included vulnerable adults with experience of chronic diseases for over six months, along with their caregivers. The intervention consisted of a six-session workshop led by two trained peers. SPH was evaluated by administering the initial item of the SF-12 questionnaire at both baseline and six months post-intervention. To evaluate the variable "Change in SPH" [improvement; remained well; worsening/no improvement (reference category)], global and disaggregated by sex multivariate multinomial logistic regression models were applied. There were 332 participants (mean = 60.5 years; 33.6% were at risk of social vulnerability; 66.8% had low incomes). Among the participants, 22.9% reported an improvement in their SPH, without statistically significant sex-based differences, while 38.9% remained in good health. The global model showed age was linked to decreased "improvement" probability (RRRa = 0.96), and the "remaining well" likelihood drops with social risk (RRRa = 0.42). In men, the probability of "remaining well" decreased by having secondary/higher education (RRRa = 0.25) and increased by cohabitation (RRRa = 5.11). Women at social risk were less likely to report "remaining well" (RRRa = 0.36). In conclusion, six months after the intervention, 22.9% of the participants had improved SPH. Age consistently decreased the improvement in the different models.

Predictors of maternal health services uptake in West African region: a multilevel multinomial regression analysis of demographic health survey reports

BackgroundPursuant to studies, receiving the three key maternal health services (Antenatal Care, Skilled Delivery Service, and Postnatal Care) in a continuum could prevent 71% of global maternal deaths. Despite the Western African region being known for its high maternal death and poor access to maternal health services, there is a dearth of studies that delve into the spectrum of maternal health services uptake. Hence, this study aimed to assess the level and predictors of partial and adequate utilization of health services in a single analytical model using the most recent Demographic and Health Survey (DHS) data (2013–2021).MethodsThis study was based on the appended women's (IR) file of twelve West African countries. STATA software version 16 was used to analyze a weighted sample of 89,504 women aged 15–49 years. A composite index of maternal health service utilization has been created by combining three key health services and categorizing them into ‘no’, ‘partial’, or ‘adequate’ use. A multilevel multivariable multinomial logistic regression analysis was carried out to examine the effects of each predictor on the level of service utilization. The degree of association was reported using the adjusted relative risk ratio (aRRR) with a corresponding 95% confidence interval, and statistical significance was declared at p < 0.05.Results66.4% (95% CI: 64.9, 67.7) and 23.8% (95% CI: 23.3, 24.2) of women used maternal health services partially and adequately, respectively. Togo has the highest proportion of women getting adequate health care in the region, at 56.7%, while Nigeria has the lowest proportion, at 11%. Maternal education, residence, wealth index, parity, media exposure (to radio and television), enrolment in health insurance schemes, attitude towards wife beating, and autonomy in decision-making were identified as significant predictors of partial and adequate maternal health service uptake.ConclusionThe uptake of adequate maternal health services in the region was found to be low. Stakeholders should plan for and implement interventions that increase women's autonomy. Program planners and healthcare providers should give due emphasis to those women with no formal education and from low-income families. The government and the private sectors need to collaborate to improve media access and increase public enrolment in health insurance schemes.