Generalized Estimating Equations Research Articles

Technique for guttural pouch bead removal using a novel three-dimensional (3D)-printed instrument.

The aim of the present study was to determine if a three-dimensional (3D)-printed instrument technique would improve lavage removal of plastic beads (guttural pouch [GP] chondroid mimics) through a dorsal pharyngeal recess (DPR) fenestration. We hypothesized that using a 3D-printed instrument placed through the DPR fenestration would remove more beads, reduce lavage time and incur less soft tissue damage than using a lavage tube control or instrument placement through the salpingopharyngeal ostium (SPO). Experimental cadaveric study. A total of 30 cadaveric equine heads. DPR fenestration was performed using transendoscopic laser and 50 plastic 12 mm beads were placed into one GP of horse heads. Four removal procedures using a 3D-printed instrument or lavage tube control placed through the DPR fenestration or the SPO were compared. Number of beads removed and number of 2-min lavage cycles to recover ≥96% of beads or three consecutive no-yield cycles were recorded. Endoscopic soft tissue damage was graded. Data were compared by generalized estimating equations (GEE) model and Fisher's exact test (p < .05). More beads (median 48 beads; range 0-49) were removed faster (median 24 beads/cycle; range 12-50) using the 3D-printed instrument compared to control (median 6 beads; range 0-29, 0.66 beads/cycle, range 0-49). There was no difference between total beads removed or removal speed between placement sites. There was no difference in soft tissue damage between procedures. Our 3D-printed instrument enabled efficient plastic bead removal. DPR fenestration and use of our 3D-printed instrument represents an alternative to current chondroid removal techniques, warranting investigation in clinical cases.

Machine learning-based phenogroups and prediction model in patients with functional gastrointestinal disorders to reveal distinct disease subsets associated with gas production.

Symptom-based subtyping for functional gastrointestinal disorders (FGIDs) has limited value in identifying underlying mechanisms and guiding therapeutic strategies. Small intestinal dysbiosis is implicated in the development of FGIDs. We tested if machine learning (ML) algorithms utilizing both gastrointestinal (GI) symptom characteristics and lactulose breath tests could provide distinct clusters. This was a prospective cohort study. We performed lactulose hydrogen methane breath tests and hydrogen sulfide breath tests in 508 patients with GI symptoms. An unsupervised ML algorithm was used to categorize subjects by integrating GI symptoms and breath gas characteristics. Generalized Estimating Equation (GEE) models were used to examine the longitudinal associations between cluster patterns and breath gas time profiles. An ML-based prediction model for identifying excessive gas production in FGIDs patients was developed and internal validation was performed. FGIDs were confirmed in 300 patients. K-means clustering identified 4 distinct clusters. Cluster 2, 3, and 4 showed enrichments for abdominal distention and diarrhea with a high proportion of excessive gas production, whereas Cluster 1 was characterized by moderate lower abdominal discomforts with the most psychological complaints and the lowest proportion of excessive gas production. GEE models showed that breath gas concentrations varied among different clusters over time. We further sought to develop an ML-based prediction model to determine excessive gas production. The model exhibited good predictive capabilities. ML-based phenogroups and prediction model approaches could provide distinct FGIDs subsets and efficiently determine FGIDs subsets with greater gas production, thereby facilitating clinical decision-making and guiding treatment.

A prospective observational study on functional outcomes and condition-specific quality of life after intersphincteric resection for low rectal cancer

Objective: To investigate functional outcomes and condition-specific quality-of-life (CSQoL) after intersphincteric resection (ISR) in patients with low rectal cancer using traditional and exploratory questionnaires. Methods: A prospective observational study was conducted in the Characteristic Medical Center of the People's Liberation Army Rocket Force. Patients with low rectal cancer who underwent ISR with ileostomy reversal from May 2020 to April 2023 were enrolled. An electronic self-assessment survey was sent to enrolled patients at 3 to 6, 12, and 24 to 36 months after reversal, and differences in functional and CSQoL results between the 3 groups were analyzed with generalized estimation equations. Functional outcomes were determined by the Wexner incontinence score (WIS) and the low anterior resection syndrome (LARS) score. In line with the five frequency responses ranging from never (score 0) to always (score 4) defined by the WIS, an exploratory survey was used to measure the severity of 16 LARS-specific variables confirmed by the latest international Delphi consensus. Furthermore, CSQoL was evaluated using the fecal incontinence quality-of-life scale (FIQL) and the visual analog scale (VAS). Results: A total of 90 patients were enrolled in the study. There were 64 males and 26 females, aged (58.6±10.4) years (range: 28 to 79 years). The median distance from the distal tumor margin to the anal verge(M(IQR)) was 3.0 (1.5) cm (range: 1.0 to 5.0 cm). There were 55 patients who completed the questionnaires at 3 to 6 months, 59 patients at 12 months, and 40 patients at 24 to 36 months of follow-up, respectively. The summary score of FIQL and VAS improved significantly after reversal (2.33±0.69 vs. 2.40±0.66 vs. 2.79±0.76, χ2=11.703,P=0.003; 5.31±1.65 vs. 5.61±1.90 vs. 6.58±1.92, χ2=12.781,P=0.002), but the differences in the WIS and LARS score did not reach statistical significance (both P>0.05). The survey responses for the LARS-specific variables indicated that "emptying difficulties" and "dissatisfaction with the bowels" were the most frequent symptom and consequence after ISR, respectively. The exploratory severity score for LARS improved significantly among the 3 time periods(34 (14) vs. 31 (13) vs. 23 (17), χ2=13.952,P=0.001). Furthermore, the FIQL summary score was strongly correlated with the LARS severity score (rs=-0.72, P<0.01). Conclusions: Although a high prevalence of LARS may persist for years, patients reported an improvement in CSQoL and functional outcomes after ISR. The highest priorities recommended by the international consensus might provide better assessments the severity of LARS.

External validation of a fully automated evaluation tool: a retrospective analysis on 68,471 scored embryos.

To externally validate a fully automated embryo classification in in vitro fertilization (IVF) treatments. Retrospective cohort study SUBJECTS: A total of 6,434 patients undergoing 7,352 IVF treatments contributed 70,456 embryos. Embryos were evaluated by conventional morphology and retrospectively scored using a fully automated deep learning-based algorithm across conventional IVF, oocyte donation, and PGT-A cycles. The primary outcomes were implantation and live birth including odds ratios (ORs) from generalized estimating equation (GEE) models. Secondary outcomes were embryo morphology, euploidy and miscarriage. Exploratory outcomes included comparison between conventional methodology and artificial intelligence (AI) algorithm with areas under the ROC curves (AUCs), agreement degree between AI and embryologists, Cohen's Kappa coefficient and relative risk (RR). Implantation and live birth rates increased as the automatic embryo score rose. The GEE model, controlling for confounders, showed the automatic score was associated with an OR of 1.31 (95%CI[1.25-1.36]) for implantation in treatments using oocytes from patients, and an OR of 1.17 (95%CI[1.14-1.20]) in the oocyte donation program, with no significant association in PGT-A treatments. For live birth, the ORs were 1.27 (95%CI[1.21-1.33]) for patients, 1.16 (95%CI[1.13-1.19]) for donors, and 1.05 (95%CI[1-1.10]) for PGT-A cycles. The average score was higher in embryos with better morphology, in euploid embryos compared to aneuploid embryos, and in embryos that resulted in a full-term pregnancy compared to those that miscarried. Concordance between the highest-scoring embryo and the embryo with the best conventional morphology was 71.4%(95%CI[67.7%-75.0%]) in treatments with patient oocytes and 61.0%(95%CI[58.6%-63.4%]) in the oocyte donation program. Overall, the Cohen's Kappa coefficient was 0.63. The automatic embryo score showed similar AUCs to conventional morphology, although implantation was higher when the transferred embryo matched the highest-scoring embryo from each cohort (57.36% vs. 49.98%). RR indicated a 1.14-fold increase in implantation likelihood when the top-ranked embryo was transferred. Fully automated embryo scoring effectively ranked embryos based on their potential for implantation and live birth. The performance of the conventional methodology was comparable to that of the artificial intelligence-based technology; however, better clinical outcomes were observed when the highest-scoring embryo in the cohort was transferred.

Assessing Barriers and Facilitators to Return to Work for Kidney Cancer Survivors: A 6-Month Longitudinal Study

ObjectivesThis study aimed to investigate the factors that impact the readiness and success of kidney cancer survivors returning to work, providing insights for healthcare professionals, employers, and policymakers. MethodsA prospective longitudinal study was conducted at Sun Yat-sen University Cancer Center from April 2022 to June 2023. The study enrolled 282 kidney cancer survivors aged 18 to 60 who completed three surveys at 1, 3, and 6 months postsurgery. Data collection involved telephone interviews and self-administered questionnaires, capturing sociodemographic information, medical history, and employment status, while follow-up assessments tracked return-to-work readiness. The scales used for analysis included the Generalized Anxiety Disorder Scale, the Patient Health Questionnaire, the Return-to-Work Self-Efficacy Questionnaire, the Perceived Social Support Scale, and the Brief Fatigue Inventory. Generalized Estimation Equations were applied to identify significant factors, with both single-factor and multivariate analyses performed to pinpoint the most critical variables. ResultsReturn-to-work rates at 1, 3, and 6 months postsurgery were 26.9%, 59.9%, and 76.2%, respectively. Higher levels of anxiety, lower self-efficacy, older age, and greater fatigue were associated with reduced return-to-work rates. Physically demanding jobs posed more barriers compared to nonmanual roles. Significant factors identified in multivariate analysis included anxiety, self-efficacy, fatigue, and the nature of the patient's work. ConclusionPsychological, physical, and job-related factors play a crucial role in determining whether kidney cancer survivors can successfully return to work. Tailored support and flexible work arrangements could help kidney cancer survivors reintegrate into the workforce, leading to better long-term outcomes. Implication for Nursing PracticeNursing professionals can play a vital role in assessing and supporting kidney cancer survivors during their recovery process by addressing both psychological and physical factors. Incorporating return-to-work readiness into postoperative care plans, offering mental health support, and liaising with employers to create flexible working conditions could enhance the reintegration of survivors into the workforce.

The influence of genotype makeup on the effectiveness of growth hormone therapy in children with Prader-Willi syndrome

BackgroundPrader-Willi syndrome (PWS) is a rare multisystemic hereditary illness. Recombinant human growth hormone (rhGH) therapy is widely recognized as the primary treatment for PWS. This study aimed to examine how different PWS genotypes influence the outcome of rhGH treatment in children with PWS.MethodsA review was conducted on 146 Chinese children with PWS, genetically classified and monitored from 2017 to 2022. Unaltered and modified generalized estimating equations (GEE) were employed to examine the long-term patterns in primary outcomes (growth metrics) and secondary outcomes (glucose metabolism metrics and insulin-like growth factor-1 (IGF-1)) during rhGH therapy. The study also evaluated the prevalence of hypothyroidism, hip dysplasia, and scoliosis before and after rhGH treatment.ResultsChildren with PWS experienced an increase in height/length standard deviation scores (SDS) following rhGH administration. The impact of rhGH therapy on growth measurements was similar in both the deletion and maternal uniparental diploidy (mUPD) cohorts. Nevertheless, the deletion group was more prone to insulin resistance (IR) compared to the mUPD group. No significant variations in growth metrics were noted between the two groups (P > 0.05). At year 2.25, the mUPD group showed a reduction in fasting insulin (FINS) levels of 2.14 uIU/ml (95% CI, -4.26, -0.02; P = 0.048) and a decrease in homeostasis model assessment of insulin resistance (HOMA-IR) of 0.85 (95% CI, -1.52, -0.17; P = 0.014) compared to the deletion group. Furthermore, there was a decrease in the IGF standard deviation scores (SDS) by 2.84 (95% CI, -4.84, -0.84; P = 0.005) in the mUPD group during the second year. The frequency of hip dysplasia was higher in the mUPD group compared to the deletion group (P < 0.05).ConclusionsrhGH treatment effectively increased height/length SDS in children with PWS, with similar effects observed in both deletion and mUPD genotypes. Children with mUPD genetype receiving rhGH treatment may experience enhanced therapeutic effects in managing PWS.

The economic impact of terrorism in South Asia

This study examines the economic impact of terrorism in South Asia. The region is currently home to 123 active terrorist/insurgent groups and is accountable for over 27 % of recorded global terrorist attacks. The annual data from the six most-terror-affected South Asian countries (Afghanistan, Bangladesh, India, Nepal, Pakistan, and Sri Lanka) during the US-led war on terror (2001 - 2022) is used. For econometric estimation, the five models: fixed-effect, generalized least squares (GLS), generalized estimating equation (GEE), quantile regression (QR), and panel-corrected standard errors (PCSE) are applied. Terror-related death (a proxy for human capital loss) and per capita income (a proxy for purchasing power) are considered to measure terrorism and its economic impact. In addition, four economic indicators (military expenditure, population, official development assistance (ODA), and USAID) and three institutional indicators (electoral democracy index, political violence index, and mobilization for autocracy index) are taken into account as control variables. The result suggests that every additional 886 terror-related human capital loss across the region significantly reduces the purchasing power of each South Asian person by at least 9.800 US dollars. Moreover, among the control variables, military expenditure, political violence, and mobilization for autocracy negatively affect per capita income, while electoral democracy, population, ODA, and USAID positively impact it. This study will also help understand the implications of the United Nations' Sustainable Development Goals (SDGs) agenda and achieving specific targets such as SDG 8 (promoting economic growth) and SDG 16 (promoting just, peaceful, and inclusive societies) based on the most terror-affected region.

Gender disparity regarding the impact of retirement on marital satisfaction: Evidence from a longitudinal study of older Korean adults.

To investigate the impact of retirement on marital satisfaction by gender on Koreans aged >45 years in a large, nationally representative cohort. Retirement status and marital satisfaction data of 5867 individuals were analysed. Marital dissatisfaction was defined as a satisfaction score reduction of more than 10 points versus the previous wave. Lagged generalised estimating equation (GEE) models adjusted for demographics (age, sex, education level and household income), health-related habits (smoking and drinking status) and comorbidities (obesity, hypertension, type 2 diabetes, and depression and frailty) were used to confirm the relationship between retirement and marital dissatisfaction. The final GEE model adjusted for covariates revealed sex-specific differences in marital satisfaction after retirement. Whereas male retirees reported higher satisfaction than non-retired men, female retiree responses revealed lower satisfaction than non-retired women. Furthermore, these trends were consistent regardless of the time elapsed after retirement. Marital satisfaction should be screened in women during the transition to retirement.

Metabolic dysfunction-associated steatotic liver disease and gallbladder polyp development: an observational study

The influence of metabolic dysfunction-associated steatotic liver disease (MASLD) on gallbladder polyp development in both sexes remains elusive. Therefore, to clarify the role of MASLD in gallbladder polyp development, we investigated the longitudinal association between MASLD and gallbladder polyps. In this observational study, we included 5,527 gallbladder polyp-free patients who underwent > 2 health check-ups over > 2 years. Generalized estimation equations were used to analyze associations between MASLD and gallbladder polyp development according to repeated measures at baseline and the most recent stage. Gallbladder polyp development rates in men and women were 7.5% and 5.6% (p < 0.01), respectively. MASLD was not significantly correlated with gallbladder polyp development. Regarding the association between gallbladder polyp development (men: ≥6 mm and women: ≥5 mm) and the number of MASLD components following lifestyle habits, men and women with ≥ 4 MASLD components had odds ratios of 3.397 (95% confidence interval: 1.096–10.53) and 5.338 (1.054–27.04), respectively. Higher nonalcoholic fatty liver disease fibrosis scores were associated with significant risk of gallbladder polyp development in women (1.991, 1.047–3.785). Although MASLD influence on gallbladder polyp development differs by sex, close monitoring of patients with an increasing number of MASLD components is essential to prevent gallbladder polyp development. Specifically, men with ≥ 4 MASLD components should be monitored for gallbladder polyps measuring ≥ 6 mm.

Reducing the incidence of overweight and obesity by a healthy lifestyle intervention program for schoolchildren in Hanoi, Vietnam: a randomized controlled trial

BackgroundThe increasing incidence and prevalence of childhood overweight (OW) and obesity (OB) are major global health challenges. This study aimed to evaluate the effectiveness of a 2-year healthy lifestyle intervention program in reducing the incidence of OW and OB among schoolchildren aged 11–12 years in Vietnam.MethodsStudy design: Randomized controlled trial.Participants and interventions: In total, 733 students participated in this study. Participants were included from four schools in Hanoi based on a random cluster sampling method. Students’ health outcomes were assessed at baseline and after 2 years.Main outcomes: The primary outcomes were the incidence of OW and OB, and the secondary outcomes were the prevalence and remission of OW and OB. Generalized estimating equations (GEEs) were used to determine the outcomes and risk factors.ResultsAfter the intervention, the prevalence of OW decreased by 9.24% in the intervention group and 3.01% in the control group.After adjustment for age and sex, the odds of overweight were 36.7% lower in the intervention group than in the control group (OR = 0.633; 95% CI: 0.434–0.925; P = 0.018). The incidence of OW was 1.31% in the intervention group compared with 5.33% in the control group. After adjustment for age and sex, the odds of incident overweight in the intervention group were 77.4% lower than in the control group (OR = 0.226; 95% CI: 0.063–0.813; P = 0.023). The proportion of patients who achieved OW remission was 41.22% in the intervention group and 28.68% in the control group. After adjustment for age and sex, the odds of OW remission of overweight were 2.219 times greater in the intervention group than in the control group (OR = 2.219; 95% CI: 1.220–4.036; P = 0.009). For most OB-related factors, there were no significant differences between the intervention and control groups.ConclusionA multicomponent healthy lifestyle intervention was effective in reducing the incidence of OW; however, it had no significant effect on OB among children aged 11–12 years in Hanoi, Vietnam.Trial registrationRetrospectively registered number: UMIN000014992, 20/08/2023.

Natural history of cerebral visual impairment in children with cerebral palsy.

To longitudinally evaluate the natural history of cerebral visual impairment (CVI) in children with cerebral palsy (CP) and identify which early visual signs or symptoms are associated with cognitive visual disorders (CVDs) at school age. Fifty-one individuals with CP and CVI underwent an ophthalmological, oculomotor, and basic visual function evaluation at three time points: T0 (6-35 months old); T1 (3-5 years old); and T2 (≥6 years old). We also performed a cognitive visual evaluation at T2. Logistic regression fitted using a generalized estimation equation (binary) and cumulative link models (ordinal) were used to model the outcomes of interest. Ophthalmological deficits were stable over time, except for ocular fundus abnormalities (T1-T0, p = 0.01; T2-T1, p = 0.02; T2-T0, p < 0.01) and strabismus, whose frequency increased with age (T2-T0, p= 0.02 with T2-T0, p = 0.05). Conversely, fixation (T1-T0, T2-T0, p < 0.01), smooth pursuit (T2-T1, T2-T0, p < 0.01), saccades (T1-T0, T2-T1, T2-T0, p < 0.01), as well as visual acuity, contrast sensitivity, and visual field (T1-T0, T2-T0, p < 0.01) all improved over time. Early oculomotor dysfunction was associated with CVD at T2. Although a diagnosis of CVI was confirmed in all children at each time point, several visual signs and symptoms improved over time; in some cases, they reached complete recovery at T1 and T2. These results emphasize the 'permanent' but 'not unchanging' nature of the CVI associated with CP during development.

Stigma, Discrimination and Other Social-Structural Factors Associated with Barriers to Counselling or Therapy among Women Living with HIV Who have Experienced Violence in Metro Vancouver, Canada.

Women living with HIV face high social and structural inequities that place them at heightened risk for gender-based violence and mental health conditions, alongside health services access inequities, with almost no research done to better understand access to mental health services. This study therefore examined social and structural factors associated with barriers to counselling or therapy amongst women living with HIV who experienced lifetime physical and/or sexual violence in Metro Vancouver, Canada. Bivariate and multivariable logistic regression using generalized estimating equations (GEE) were used and adjusted odds ratios (AOR) and 95% Confidence Intervals ([95%CIs] are reported). From Sept/15-Aug/21, 1695 observations were collected among 279 participants. In multivariable analysis, with all variables measured in the last six months, experiencing any barriers to counselling or therapy was significantly associated with having thoughts or attempts of suicide (AOR:1.64 [1.02-2.66]), lacking coverage for health care (AOR:1.60 [1.17-2.18]), and everyday discrimination (AOR:1.02 [1.00-1.04]) and anticipated (AOR:1.57 [1.04-2.36]), enacted (AOR:1.48 [1.02-2.16]) or internalized (AOR:1.53 [1.07-2.20]) HIV stigma. Access to interdisciplinary mental health care services should be improved. Social and structural interventions to reduce HIV stigma and discrimination are urgently needed.

Interpregnancy intervals and behavioural outcomes in children: A population-based longitudinal study

BackgroundWhile the physical health consequence of short interpregnancy intervals (IPIs) is well documented, its mental health impact is not well explored. This study aimed to examine the associations between IPIs and behavioural outcomes in children born following the interval at four developmental time points between ages 7 and 16. MethodsOur study sample comprised participants in the Avon Longitudinal Study of Parents and Children (ALSPAC) cohort, an ongoing population-based longitudinal birth cohort in Bristol, Avon, United Kingdom. Behavioural problems, including total behavioural difficulties, hyperactivity, emotional symptoms, conduct problems, peer-problems, and problems of pro-social behaviour, were assessed using the Strengths and Difficulties Questionnaire (SDQ). Over 2300 mothers and their singleton children were included in this study. Generalized Estimating Equations (GEE) were used to estimate odds ratios for the associations. ResultsChildren born to mothers with short IPI (<6 months) were 1.54 (95%CI: 1.12–2.11), 1.42 (95% CI: 1.12–1.81) and 1.37 (95%CI: 1.04–1.79) times more likely to have total behavioural difficulties, conduct problems and hyperactivity/inattention problems across the child's age, respectively, compared with children of mothers with IPIs of 18–23 months. We found no evidence of associations between short IPI (<6 months) and emotional symptoms, peer-relationship problems and pro-social behaviour problems. ConclusionShort IPI (<6 months) was associated with externalising (conduct and hyperactivity/inattention) but not internalising (emotional and peer-relationship problems) problems. Further studies are needed to confirm this association and elucidate the underlying mechanisms.

Muscle recruitment during gait in individuals with unilateral transfemoral amputation due to trauma compared to able-bodied controls.

Individuals with transfemoral lower limb amputations walk with adapted gait. These kinetic and kinematic compensatory strategies will manifest as differences in muscle recruitment patterns. It is important to characterize these differences to understand the reduced endurance, reduced functionality, and progression of co-morbidities in this population. This study aims to characterize muscle recruitment during gait of highly functional individuals with traumatic transfemoral amputations donning state-of-the-art prosthetics compared to able-bodied controls. Inverse dynamic and static optimisation methods of musculoskeletal modelling were used to quantify muscle forces of the residual and intact limb over a gait cycle for 11 individuals with traumatic transfemoral amputation and for 11 able-bodied controls. Estimates of peak muscle activation and impulse were calculated to assess contraction intensity and energy expenditure. The generalized estimation equation method was used to compare the maximum values of force, peak activation, and impulse of the major muscles. The force exhibited by the residual limb's iliacus, psoas major, adductor longus, tensor fasciae latae and pectineus is significantly higher than the forces in these muscles of the intact contralateral limb group and the able-bodied control group (p < 0.001). These muscles appear to be recruited for their flexor moment arm, indicative of the increased demand due to the loss of the plantar flexors. The major hip extensors are recruited to a lesser degree in the residual limb group compared to the intact limb group (p < 0.001). The plantar flexors of the intact limb appear to compensate for the amputated limb with significantly higher forces compared to the able-bodied controls (p = 0.01). Significant differences found in impulse and peak activation consisted of higher values for the limbs (residual and/or intact) of individuals with transfemoral lower limb amputations compared to the able-bodied controls, demonstrating an elevated cost of gait. This study highlights asymmetry in hip muscle recruitment between the residual and the intact limb of individuals with transfemoral lower limb amputations. Overall elevated impulse and peak activation in the limbs of individuals with transfemoral amputation, compared to able-bodied controls, may manifest in the reduced walking endurance of this population. This demand should be minimised in rehabilitation protocols.

Superficial vessel density and determinants of macular microvasculature in healthy Chinese subjects

BackgroundThe purpose of this study was to investigate the vessel density (VD) of the macular superficial capillary plexus (SCP) and its associated factors in healthy subjects. MethodsThis prospective, cross-sectional study enrolled healthy Chinese volunteers. The optical coherence tomography angiography (OCTA) was used to measure the superficial VD in macula. A generalized estimation equation (GEE) model was used to analyze the ocular and systemic associated factors. ResultsA total of 516 eyes of 262 healthy subjects were included (mean age 38.59 ± 21.03 years). The total VD of macular SCP was 16.85 ± 2.28 mm−1. The VD in the inner ring and outer ring were significantly higher than that in the central ring, with the density being highest in nasal quadrant and lowest in the superior quadrant. After adjusting the ocular and systemic factors, age (β=-0.0085, P = 0.0122) and SSI (β=1.3261, P < 0.001) were significantly associated with total VD of the macular SCP. ConclusionsAmong the healthy Chinese subjects included in the study, the mean total VD of macular SCP was 16.85 ± 2.28mm-1. The macular superficial capillary density was positively associated with age and SSI. Further studies are still required to better understand the change of macular VD in aging and other pathological conditions.

The risk of dyslipidemia on PLHIV associated with different antiretroviral regimens in Huzhou

Background Dyslipidemia is increasingly common in people living with HIV (PLHIV), thereby increasing the risk of cardiovascular events and diminishing the quality of life for these individuals. The study of blood lipid metabolism of PLHIV has great clinical significance in predicting the risk of cardiovascular disease. Therefore, this study aims to examine the blood lipid metabolism status of HIV-infected patients in Huzhou before and after receiving highly active antiretroviral therapy (HAART) and to explore the impact of different HAART regimens on dyslipidemia. Method PLHIV confirmed in Huzhou from June 2010 to June 2022 was included. The baseline characteristics and clinical data during the follow-up period were collected, including some blood lipid indicators (total cholesterol and triglycerides) and HAART regimens. A multivariate logistic regression model and the generalized estimating equation model were used to analyze the independent effects of treatment regimens on the risk of dyslipidemia. Result The overall prevalence of dyslipidemia among PLHIV after HAART was 70.11%. PLHIV receiving lamivudine (3TC) + efavirenz (EFV) + zidovudine (AZT) had a higher prevalence of dyslipidemia compared to those receiving 3TC+EFV+tenofovir disoproxil fumarate (TDF). In a logistic analysis adjusted for important covariates such as BMI, age, diabetes status, etc., we found that the risks of dyslipidemia were higher with 3TC+EFV+AZT (dyslipidemia: odds ratio [OR] = 2.09, 95% confidence interval [Cl]: 1.28–3.41; TG ≥1.7: OR = 2.40, 95%Cl:1.50–3.84) than with 3TC+EFV+TDF. Furthermore, on PLHIV that was matched 1:1 by the HAART regimens, the results of the generalized estimation equation again showed that 3TC+EFV+AZT (TG ≥1.7: OR = 1.84, 95%Cl: 1.10–3.07) is higher for the risk of marginal elevations of TG than 3TC+EFV+TDF. Conclusion The prevalence of dyslipidemia varies according to different antiretroviral regimens. Using both horizontal and longitudinal data, we have repeatedly demonstrated that AZT has a more adverse effect on blood lipids than TDF from two perspectives. Therefore, we recommend caution in using the 3TC+EFV+AZT regimen for people at clinical risk of co-occurring cardiovascular disease.

An Archival Study of the Relationship Between Treatment Duration, Functioning, and Out-of-Home Placement for Youth with Serious Emotional Disturbance in a State-Wide Intensive In-Home Family Treatment Program

The main aim of this study was to evaluate the effectiveness of Pennsylvania’s state-wide intensive in-home treatment for youth with serious emotional disturbance (SED), EcoSystemic Structural Family Therapy-Family Based Mental Health Services (ESFT-FBMHS). Despite its long history of implementation, the program remains empirically under-evaluated. In this archival study, out-of-home placement and youth functioning outcomes were compared across four tiers of length of stay. Given the high-risk population treated in ESFT-FBMHS, it was hypothesized that the families and youth who completed the full duration of treatment (169–224 days) would have better outcomes than those who stopped treatment after 168 days or less. We utilized an ex post facto quantitative research design analyzing archived medical claims data of 2251 youth treated between 2018 and 2022 to assess out-of-home placement rates and analyzed archived data from six domains of the Child and Adolescent Needs and Strengths (CANS; Problem Presentation, Risk Behaviors, Functioning, Child Safety, Caregiver Needs, and Child Strengths) to assess changes in youth functioning post-discharge (90 and 180 days). An analysis using generalized estimating equations (GEE), controlling for potential confounding variables such as demographics and clinical features, suggest that length of stay in ESFT-FBMHS was significantly associated with out-of-home placement and youth improvement on the CANS at both 90- and 180-days post-discharge. As a group, youth with SED who did not complete the full duration of the program had 2–3 times the odds of out-of-home placement at 90 days post-discharge and 1–3 times the odds at 180 days post-discharge as compared to program completers. CANS scores showed improvement in 40.1% of youth who completed the program as compared to only 11.7%–18.2% for those who did not. The results of this study suggest that ESFT-FBMHS is effective for youth with SED as a group and can improve youth functioning and reduce out-of-home placement.

Prognosticating Residual Dysplasia at Skeletal Maturity Following Closed Reduction for Developmental Dysplasia of the Hip: A Long-Term Study with an Average 20-Year Follow-up.

Patients with developmental dysplasia of the hip (DDH) are at risk for residual acetabular dysplasia even after successful closed reduction. The aim of this study was to identify predictors of long-term outcomes in order to guide prognostication and management. Patients who were treated for DDH at 2 institutions between 1970 and 2010 and had follow-up until skeletal maturity were screened for inclusion. Hips that underwent open reduction were excluded to reduce iatrogenic confounding. Syndromal (including neuromuscular and arthrogrypotic) hip instability with collagenopathies were excluded. Demographic characteristics, Tönnis grade, age at the time of the reduction, surgical treatment, acetabular index, lateral center-edge angle, residual dysplasia graded using the Severin classification, and the presence and type of proximal femoral growth disturbance categorized using the Bucholz and Ogden classification were assessed. In addition, the the acetabular angle was recorded at the latest follow-up before secondary procedures, and the Oxford Hip Score and 5-level EuroQoL (EQ)-5 Dimension score were recorded at the latest follow-up. To account for repeated measures, generalized estimating equations (GEE) logistic regression was utilized for the multivariable analysis. A support vector machine model and a receiver operating characteristic curve analysis were utilized to identify prognostication thresholds. One hundred and seven hips (96 female, 11 male) that were followed to skeletal maturity, with a mean follow-up of 20 years (range, 10 to 54 years), were included in the analysis. Eighty-nine hips (83%) demonstrated a good outcome at skeletal maturity, with a Severin grade of I or II. Major growth disturbances of Bucholz and Ogden types II, III, or IV were present in 13 hips (12%). At the latest follow-up after skeletal maturity (before any secondary procedures), the mean acetabular angle was 45° ± 4° and the mean lateral center-edge angle was 26° ± 8°. The mean Oxford Hip Score and EQ visual analog scale values were 47 and 86, respectively. A GEE logistic regression analysis of 1,135 observations revealed that the acetabular index (odds ratio [OR], 1.16 per degree; p < 0.001) and age (OR, 1.20 per year; p = 0.003) were significant predictors of a poor outcome (i.e., Severin grade III, IV, or V). Significant differences in acetabular indices across all age groups were found between hips with a good outcome and those with a poor outcome. Age-specific acetabular index prognostication cutoff values are presented. This long-term follow-up study demonstrated that the age-specific acetabular index remains an important predictor of residual dysplasia at skeletal maturity. The proposed prognostication chart and thresholds herein can help to guide orthopaedic surgeons and parents when contemplating the use of an intervention versus surveillance to optimize long-term outcomes. Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

A higher body mass index and increased syndesmophytes volume are associated with facet joints ankylosis on thoracic spine in patients with ankylosing spondylitis: a retrospective cohort study

ObjectiveTo investigate the association between syndesmophytes and facet joint (FJ) lesions in patients with ankylosing spondylitis (AS), and to identify clinical factors associated with FJ ankylosis (FJA) in thoracic segment.MethodsNinety-seven patients with AS who underwent thoracic spine computed tomography (CT) or chest CT and without completely thoracic spine fusion were included. FJ lesions were analyzed for the numbers and distribution of normal, ankylosis, erosions, joint-space narrowing, osteophytes, and subchondral sclerosis. The volume of vertebral syndesmophtes unit (VSU) and total thoracic syndesmophtes volume were separately calculated by Mimics software. Clinical factors associated with FJA were investigated using generalized estimation equation (GEE). The association between syndesmophtes volume and numbers of FJ structural lesions was analyzed using generalized additive mixed model (GAMM).Results2328 FJ and 1164 VSUs in thoracic spine were assessed. The majority FJ structural lesions were ankylosis (32.39%). FJA was more frequently seen in vertebrae with syndesmophytes formation (p < 0.001). GEE showed that patients with normal BMI (18.5–24.9 kg/m2) and high BMI (> 24.9 kg/m2) were more likely to have FJA in thoracic spine (odds rations [95% confidence interval]: 0.27(0.12–0.59), 1.45(1.03–8.57), respectively). GAMM showed that syndesmophytes volume increase the numbers of FJA (standard β = 0.009, p < 0.05) and decreased the numbers of normal FJ (standard β = -0.07, p < 0.01).ConclusionFJA was the most common FJ structural lesion in thoracic spine, and it increases linearly with syndesmophytes before the bridging syndesmophytes formed. A higher BMI (especially > 24.9 kg/m2) and increased syndesmophytes volume are associated with FJA in thoracic spine.

New findings on clinical experience on surface-guided radiotherapy for frameless non-coplanar stereotactic radiosurgery treatments.

The aim of this study was to assess the accuracy of a surface-guided radiotherapy (SGRT) system for setup and intra-fraction motion control in frameless non-coplanar stereotactic radiosurgery (fSRS) using actual patient data immobilized with two different types of open-faced masks and employing a novel SGRT systems settings. Forty-four SRS patients were immobilized with two types of open-faced masks. Sixty lesions were treated, involving the analysis of 68 cone-beam scans (CBCT), 157 megavoltage (MV) images, and 521 SGRT monitoring sessions. The average SGRT translations/rotations and 3D vectors (MAG-Trasl and MAG-Rot) were compared with CBCT or antero-posterior MV images for 0° table or non-coplanar beams, respectively. The intrafraction control was evaluated based on the average shifts obtained from each monitoring session. To assess the association between the SGRT system and the CBCT, the two types of masks and the 3D vectors, a generalized estimating equations (GEE) regression analysis was performed. The Wilcoxon singed-rank test for paired samples was performed to detect differences in couch rotation with longitudinal (LNG) and lateral (LAT) translations and/or yaw. The average SGRT corrections were smaller than those detected by CBCT (≤0.5mm and 0.1°), with largest differences in LNG and yaw. The GEE analysis indicated that the average MAG-Trasl, obtained by the SGRT system, was not statistically different (p=0.09) for both mask types, while, the MAG-Rot was different (p=0.01). For non-coplanar beams, the Wilcoxon singed-rank test demonstrated no significantly differences for the corrections (LNG, LAT, and yaw) for any table rotation except for LNG corrections at 65° (p=0.04) and 75° (p=0.03) table angle position; LAT shifts at 65° (p=0.03) and 270° (p<0.001) table angle position, and yaw rotation at 30° (p=0.02) table angle position. The average intrafraction motion was<0.1mm and 0.1° for any table angle. The SGRT system used, along with the novel workflow performed, can achieve the setup and intra-fraction motion control accuracy required to perform non-coplanar fSRS treatments. Both masks ensure the accuracy required for fSRS while providing a suitable surface for monitoring.