Cross-sectional Series Analysis Research Articles

Changes in Support for Advance Provision and Over-the-Counter Access to Medication Abortion

Since Dobbs v Jackson Women's Health Organization (Dobbs) removed federal abortion protections, people's views about alternative models of abortion care may have been impacted, yet research on this topic is limited. To examine changes in national support for and personal interest in advance provision (AP) and over-the-counter (OTC) access to medication abortion. Two nationally representative cross-sectional online surveys were administered to a market research firm's panel members who were assigned female at birth (AFAB) and aged 15 to 49 years from December 2021 to January 2022 (before Dobbs) and June to July 2023 (after Dobbs). Data were analyzed from February 2023 to June 2024. Completion of survey before and after Dobbs. Changes from before to after Dobbs in 4 primary outcome measures were examined: support for and personal interest in AP and OTC access to medication abortion. A total of 6982 AFAB people before Dobbs and 3561 after Dobbs completed at least 1 of 4 primary outcome measures. From before to after Dobbs, 2666 (weighted 31.3%) and 1258 (weighted 30.1%) were aged 30 to 39 years, 1395 (21.4%) and 708 (21.5%) reported their race and ethnicity as Hispanic/Latinx, 594 (13.7%) and 304 (13.6%) as Black non-Hispanic/Latinx, and 4504 (54.6%) and 2270 (54.2%) as White non-Hispanic/Latinx. There was a significant increase from before to after Dobbs in national support for AP (48.9% before; 95% CI, 47.1% to 50.6%; 55.1% after; 95% CI, 52.8% to 57.3%) and OTC access (49.4% before; 95% CI, 47.6% to 51.1%; 55.2% after; 95% CI, 52.9% to 57.5%) and an increase in personal interest in AP (23.6% before; 95% CI, 22.2% to 25.1%; 26.4% after; 95% CI, 24.3% to 28.4%) and OTC access (36.0% before; 95% CI, 34.3% to 37.6%; 42.5% after; 95% CI, 40.2% to 44.7%). Among people living in states with abortion bans, larger increases in personal interest in AP (5.3 percentage points [pp]; 95% CI, 0.5 to 10.3 pp) and OTC access (9.4 pp; 95% CI, 3.9 to 14.9 pp) were observed than among people in states without bans (1.4 pp; 95% CI, -1.7 to 4.6 pp and 5.4 pp; 95% CI, 2.0 to 8.9 pp, respectively). In this serial cross-sectional analysis of people aged 15 to 49 years before Dobbs and 1 year after Dobbs, findings suggested that national support for expanded access to medication abortion has grown. Alternative models of care, such as AP and OTC, have the potential to offer a promising approach to abortion care, particularly for people living in abortion-restricted states.

Temporal changes in hospital readmissions for postpartum hypertension in the US, 2010 to 2019; a serial cross-sectional analysis.

Hypertension is the most common primary diagnosis associated with postpartum readmissions within 42 days of delivery hospitalization. In the United States, nearly half of the cases of eclampsia, a severe form of preeclampsia, develop during the postpartum period, and the postpartum onset of hypertensive disorders of pregnancy, like antepartum hypertension poses long-term health risks to pregnant individuals, including an increased likelihood of developing overall cardiovascular disease, coronary heart disease, heart failure, and chronic hypertension. In this paper, we estimate the trends in the incidence of readmissions for postpartum hypertension within 42 days of delivery discharge in the US, disaggregated by median household income. Using National Readmissions Database, we calculated the readmission rates for postpartum hypertension, both overall and stratified by ZIP Code median household income for each year between 2010 and 2019. We also calculated the percentage change and average annual growth rate (AAGR) in the rate of readmissions for postpartum hypertension between 2010 and 2019 for each income group. We then used a logistic regression model to compare the temporal changes in readmission for postpartum hypertension between the lowest and the highest income quartiles. The estimated incidence of postpartum hypertension readmissions doubled for all the income groups between 2010 and 2019 (0.36% vs. 0.8%). While the incidence of postpartum hypertension cases was higher among the lowest-income quartile, the increase in postpartum hypertension readmissions between 2010 and 2019 was greater in the highest-income quartile. Moreover, the incidence of postpartum hypertension readmissions rose faster in pregnant patients without a history of hypertension compared to those with a history of hypertension (AAGR 8.3% vs. 5.1%). The increasing postpartum hypertension readmission burden suggests rising future health risks among mothers and a growing cost burden to the U.S. healthcare system. The higher rate of increase in postpartum hypertension readmissions among people without a history of hypertension calls for blood pressure checking in the postpartum period for all patients regardless of risk status.

Forecasting the use of chiropractic services within the Veterans Health Administration.

To model future use of chiropractic services and predict clinical resource needs within the Veterans Health Administration (VA) over the next 5 years. A serial cross-sectional analysis of chiropractic use data from VA's Corporate Data Warehouse for fiscal years (FY) 2017 through 2022 (10/1/2016-9/30/2022). We calculated the proportion of VA chiropractic users-via care provided on-station and/or purchased from Community Care Network (CCN) providers-compared to overall VA healthcare users for each FY. We calculated the historical year-over-year compound annual growth rate (CAGR), which was used to predict use in FY2023 through 2027 (10/1/2022-9/30/2027). VA's chiropractic use rate increased from 1.4% in FY2017 to 3.5% in FY2022, at which point 2.0% of VA users received only CCN chiropractic care, 1.3% only on-station, and 0.2% both. During the 6-year observation period, the CAGRs were overall 17.9%, CCN only 23.8%, on-station only 12.4%, and both 27.7%. Using those rates to extrapolate, by the end of FY2027 overall use will be 8.9%, with 5.9% only CCN, 2.3% only on-station, and 0.6% both. Overall use of VA chiropractic services is projected to more than double from FY 2022 to FY2027. These findings underscore the need for proactive resource planning to address the expected increased use of both CCN and on-station care.

Cardiovascular mortality trends and disparities in U.S. breast cancer patients, 1999–2020: a population-based retrospective study

BackgroundBreast cancer survivors face a higher risk of cardiovascular disease (CVD) compared to non-breast cancer patients, yet contemporary data on CVD-related mortality within this group remains scarce.ObjectiveTo investigate trends and disparities in CVD mortality among breast cancer patients.MethodsWe queried the Centers for Disease Control and Prevention’s Wide-Ranging Online Data for Epidemiologic Research (CDC Wonder) and conducted serial cross-sectional analyses on national death certificate data for CVD mortality in breast cancer patients aged 25 and above from 1999 to 2020. We calculated age-adjusted mortality rates (AAMR) per 100,000 individuals and analyzed trends over time using the Joinpoint Regression Program, with further analyses stratified by age, race, census region, and urbanization level.ResultsA total of 74,733 CVDs with comorbid breast cancer in the United States were identified between 1999 and 2020. The AAMR from CVDs with comorbid breast cancer decreased from 2.57 (95% CI [2.50–2.65]) in 1999 to 1.20 (95% CI [1.15–1.24]) in 2020, with an average annual percent change (AAPC) of − 4.3. The three most common causes of CVDs were ischemic heart disease (47.8%), cerebrovascular disease (17.1%), and hypertensive disease (10.6%). Our analysis revealed a significant decrease in AAMR for all CVD subtypes, except for hypertensive diseases and arrhythmias. The decrease in annual percent change (APC) was more pronounced in individuals aged ≥ 65 years compared to those < 65 years (-4.4, 95%CI [-4.9, -3.9] vs. -2.9, 95%CI [-4.1, -1.7], respectively. Notably, non-Hispanic Blacks consistently exhibited the highest AAMR (1.95, 95%CI [1.90–1.99]), whereas Hispanic or Latina patients had the lowest AAMR (0.75, 95% CI [0.72–0.78]). The AAMR was also higher in rural regions than in urban areas (1.64, 95%CI [1.62–1.67] vs. 1.55, 95%CI [1.53–1.56]).ConclusionThe study highlights a significant decline in CVD mortality among breast cancer patients over two decades, with persistent disparities by race and region. Exceptionally, hypertensive diseases and arrhythmias did not follow this declining trend.

Trends in the Mortality and Death of Periviable Preterm Infants in the United States, 2011 to 2020.

This study aimed to examine the trends in the infant mortality rate (IMR) and the trends in the timing of death among periviable preterm infants at 22 to 24 weeks' gestational age (GA) in the United States from 2011 to 2020. Retrospective, serial cross-sectional analysis of periviable preterm infants born in the United States at 22 to 24 weeks' GA using the linked birth/infant death records from the Centers for Disease Control and Prevention. Data were analyzed from 2011 to 2020. The exposure was the year of death, and the outcome was the changes over time in the IMR and the timing of death. Further, we evaluated racial differences in the timing of death. We used nonparametric trend analysis to evaluate changes in mortality rate across the study period. The IMR was inversely related to GA, and for each GA and race/ethnicity, the IMR significantly declined during the study period. The IMR rate was highest in the first 7 days of life for all GAs and races/ethnicities. While Non-Hispanic White infants had a higher infant neonatal mortality rate than non-Hispanic Black infants, non-Hispanic Black infants had a higher postneonatal mortality rate. The IMR among periviable infants born at 22 to 24 weeks' GA improved for all GAs and races in the United States between 2011 and 2020. However, significant racial differences in the timing of death exist. · As expected, the IMR was inversely related to gestational age at 22 to 24 weeks.. · At each gestational age and for each racial/ethnic group, the overall IMR decreased during the study period.. · Non-Hispanic White infants had a higher neonatal mortality rate, whereas non-Hispanic Black infants had a higher postneonatal mortality rate..

Trends in Toddler Diet Quality in the United States: 1999 to 2018.

Diet quality has improved over time for US adults and youth aged ≥2 years. Trends over time and disparities in the diet quality of toddlers 12 through 23 months old have not been documented. Our objective was to investigate the direction and magnitude of toddler diet quality trends from 1999 to 2018 overall and by household socioeconomic status. This serial cross-sectional analysis of National Health and Nutrition Examination Survey (NHANES) data was performed with 2541 toddlers from 10 NHANES cycles from 1999 to 2018. Dietary intake was measured by NHANES study staff using proxy-reported 24-hour recalls. Healthy Eating Index-Toddlers-2020 total scores (0-100 points, higher scores indicate healthier diets) and component scores were calculated from the 24-hour dietary recalls using the population ratio method. Multivariable linear regression was used to evaluate the association between time in years (measured as the midpoint of each NHANES cycle) and diet quality. Toddler diet quality improved significantly from 1999 to 2018 (P < .001), from 63.7 points on average in 1999-2000 to 67.7 points in 2017-2018. A significant positive linear trend in total diet quality was observed for all socioeconomic status groups (P < .05). Several dietary component scores improved, as follows: Whole Fruits (P < .001), Whole Grains (P = .016), Fatty Acids (P = .002), Refined Grains (P = .009), and Added Sugars (P < .001). Scores did not significantly change for Total Fruit, Total Vegetables, Greens and Beans, Dairy, Total Protein Foods, Seafood and Plant Proteins, Sodium, or Saturated Fats. From 1999 to 2018, toddler diet quality improved significantly, but mean scores still fell short of dietary guidance.

Persistent ethnic disparities in authorship within top European and North American medical journals: a serial cross-sectional analysis

ObjectivesWe examined the ethnic origin of authors who published research articles in leading medical journals over the past 2 decades. Study Design and SettingWe carried out a serial cross-sectional analysis of first and last authors who published original research articles in the British Medical Journal, Lancet, Journal of the American Medical Association, and New England Journal of Medicine in 2002, 2012, and 2022. The main outcome was the change in proportion of authors over time according to ethnic origin (Anglo, North/West European, South/West European, Asian, Arab and Middle Eastern, African), gender (male, female), and institutional affiliation in percentage points. ResultsMost authors were of Anglo descent (44%), although the proportion of non-European authors grew between 2002 and 2022. East Asian, South Asian, and Arab and Middle Eastern last authors accounted for a greater proportion of authors over time, gaining between 3 and 6 percentage points, while African authors made no gains. Gains were gender-specific, with non-European men gaining 8 points as first and last authors, but non-European women gaining 5 points as last authors only. Most non-European authors were affiliated with North American (42.9%) or European (22.4%) institutions, while non-European authors from other institutions did not make meaningful gains over time. ConclusionEthnic diversity of authors in leading medical journals has increased somewhat over time, but non-European men account for most of the gains. Non-European women have yet to make comparable advancement as authors.

National Trends in Aspirin Use and Expenditures in the United States: Analysis of The Medical Expenditure Panel Survey 2000-2021.

Since its invention in 1897, aspirin (ASA) has been the most widely used and cost-effective antiplatelet agent to prevent and treat atherosclerotic cardiovascular disease (ASCVD). We aimed to study the trends and expenditures associated with ASA use in the USA. We conducted a serial cross-sectional analysis using the Medical Expenditure Panel Survey data from January 2000 to December 2021, focusing on adults aged ≥ 40years. Total and out-of-pocket expenditures associated with ASA were estimated to 2021 US dollars (USD). Trends, demographics, and predictors of ASA use among patients with and without ASCVD were also evaluated. A total of 53million adults were identified during the study period. The number of ASA users increased from 2.9million to 6.6million with increased female (36.7%-49.7%; ptrend = 0.02) and African American (13%-18.9%; ptrend = 0.03) representation amongst all ASA users during the survey period. The use of low-dose ASA increased, while high-dose ASA declined significantly. Only 50% of all ASA users had known ASCVD. The most prevalent ASA users among patients with ASCVD were those aged ≥ 70years, while patients without ASCVD, it was the 50-69 age group. The total annual expenditure on ASA averaged approximately 60million USD, with 27.3million USD out-of-pocket. Total and low-dose (81mg) ASA use has increased, while high-dose (325mg) ASA has declined. ASA use for primary prevention has risen among adults aged 50-69years, and patients ≥ 70years continue to use ASA without known ASCVD. Further studies are needed to understand the implications of increased ASA use, especially among those without ASCVD.

Temporal and spatial trends of fentanyl co-occurrence in the illicit drug supply in the United States: a serial cross-sectional analysis

BackgroundFentanyl and its analogs contribute substantially to drug overdose deaths in the United States. There is concern that people using drugs are being unknowingly exposed to fentanyl, increasing their risk of overdose death. This study examines temporal trends and spatial variations in the co-occurrence of fentanyl with other seized drugs. MethodsWe identified fentanyl co-occurrence (the proportion of samples of non-fentanyl substances that also contain fentanyl) among 9 substances or substance classes of interest: methamphetamine, cannabis, cocaine, heroin, club drugs, hallucinogens, and prescription opioids, stimulants, and benzodiazepines. We used serial cross-sectional data on drug reports across 50 states and the District of Columbia from the National Forensic Laboratory Information System, the largest available database on the U.S. illicit drug supply, from January 2013 to December 2023. FindingsWe analyzed data from 11,940,207 samples. Fentanyl co-occurrence with all examined substances increased monotonically over time (Mann-Kendall p<0.0001). Nationally, fentanyl co-occurrence was highest among heroin samples (approx. 50%), but relatively low among methamphetamine (≤1%), cocaine (≤4%), and other drug samples. However, co-occurrence rates have grown to over 10% for cocaine and methamphetamine in several Northeast states in 2017-2023. InterpretationFentanyl co-occurs most commonly with heroin, but its presence in stimulant supplies is increasing in some areas, where it may pose a disproportionately high risk of overdose. FundingThis work was partly supported by FDA grant U01FD00745501. This article reflects the views of the authors and does not represent the views or policies of the FDA or US Department of Health and Human Services.

Changes in unhealthy food consumption among vulnerable elementary-aged children in the United States during the COVID-19 pandemic: a serial cross-sectional analysis.

Several studies suggest that during the early pandemic, amidst socioeconomic instability, children from underserved families were more likely to resort to consuming cheaper, lower-quality foods with longer shelf lives. This study investigated the change in unhealthy food consumption across different phases (pre, early, mid) of the COVID-19 pandemic, and whether the strength of association between unhealthy food consumption and household socioeconomic disadvantage (HSED) varied across phases of the pandemic. This study utilized serial cross-sectional data collected from low-income families enrolled in a school-based food co-op, Brighter Bites. Secondary data analysis included 5,384 surveys from families who had complete data: 3422 pre-pandemic, 944 from the early pandemic, and 1,018 mid-pandemic. Outcome measures included sugary food intake and convenience/fast food intake, each of which was operationalized as a scale using pre-validated items from the surveys. HSED was operationalized as a composite of parent employment, parent education, food insecurity, and participation in government programs; responses were categorized into low, medium, and high HSED groups for analysis. We examined the interaction between HSED and time period to explore how HSED and its association with dietary measures changed over the course of the pandemic. A significant linear negative trend, i.e., a decrease in consumption from pre-to-mid-pandemic period was seen in sugary food intake (p < 0.001), but not in convenience food intake. In data pooled across time-periods, both sugary food and convenience/fast food consumption were inversely associated with HSED, and low unhealthy food consumption was observed among high-disadvantage groups. No significant interaction between time period and HSED was observed on either scale. However, the post-regression estimates from the adjusted interaction model showed a significant association between convenience/fast food consumption and HSED in pre- and mid-pandemic periods. The study highlights the nuances of socioeconomic dynamics on the diet behaviors of children from low-income families during a natural disaster.

Menopausal Hormone Therapy Use Among Postmenopausal Women

Menopausal hormone therapy (MHT) is the treatment of choice for symptoms of menopause. However, its adoption is hindered by the risk-benefit trade-off in relation to acute and chronic diseases. To evaluate trends in and correlates of MHT use among postmenopausal women in the US from 1999 to March 2020. This serial cross-sectional analysis of MHT use used data from the nationally representative National Health and Nutrition Examination Survey (NHANES). Participants included noninstitutionalized US postmenopausal women from 10 NHANES study cycles (1999-2000 to 2017-March 2020 [pre-COVID-19 pandemic]). Data were analyzed from December 2023 to April 2024. NHANES study cycle. Prevalence of MHT use was extracted from the prescription medication data collected during NHANES household interviews. MHT formulations were determined by hormone type. Data on 13 048 US postmenopausal women (47.1% ≥65 years old) were analyzed. From 1999 to 2020, the prevalence of MHT use decreased among women of all age groups, from 26.9% (95% CI, 22.6%-31.7%) in 1999 to 4.7% (95% CI, 3.4%-6.5%) in 2020. Until 2002, MHT use was highest among women aged 52 to 65 years, but since 2005, MHT use has been highest among women younger than 52 years. MHT use decreased by 23.5% (95% CI, 11.4%-35.6%), 31.4% (95% CI, 23.4%-39.5%), and 10.6% (95% CI, 6.3%-14.8%) for women younger than 52 years, 52 years to younger than 65 years, and 65 years and older, respectively. Prevalence of MHT use decreased from 13.8% (95% CI, 8.5%-21.7%) to 2.6% (95% CI, 1.5%-4.6%) for Hispanic women, 11.9% (95% CI, 8.5%-16.3%) to 0.5% (95% CI, 0.2%-1.1%) for non-Hispanic Black women, and 31.4% (95% CI, 27.1%-36.1%) to 5.8% (95% CI, 4.1%-8.2%) for non-Hispanic White women. Non-Hispanic White women consistently had the highest prevalence of MHT use. Estrogen-only formulation accounted for more than 50% of the MHT for most study periods. The prevalence of MHT use varied by family income-to-poverty ratio, health insurance coverage in all racial and ethnic groups, weight, and smoking status among non-Hispanic White women, as well as by education attainment among non-Hispanic Black and Hispanic women. Results of this cross-sectional study show that over the past 2 decades, MHT use declined among US postmenopausal women of all age and racial and ethnic groups. Women of racial and ethnic minority groups had lower prevalence of MHT use compared to non-Hispanic White women.

Annual hepatitis C testing and positive tests among gay and bisexual men in Australia from 2016 to 2022: a serial cross-sectional analysis of sentinel surveillance data

ObjectiveGuidelines recommend annual hepatitis C virus (HCV) testing for gay and bisexual men (GBM) with HIV and GBM prescribed HIV pre-exposure prophylaxis (PrEP). However, there is a limited understanding of...

Characteristics and Trends of Pediatric Trauma in Jeju Island, South Korea: A Community Level Serial Cross-sectional study.

This study aimed to investigate the characteristics and epidemiological trends of pediatric injuries among patients visiting emergency departments (EDs) on Jeju Island. Employing a community-level serial cross-sectional analysis, we targeted pediatric patients aged 18 years or younger who visited EDs for injuries over a ten-year period. The data, sourced from the Jeju Injury Surveillance System (JISS), facilitated a comprehensive examination of injury characteristics and epidemiological trends. This included an evaluation of the annual incidence and overall trends in pediatric injury cases. The study found toddlers (42.5% of cases) to be the most frequently injured age group. Males were more prone to injuries, with a male-to-female ratio of 1.7:1. Injuries among visitors accounted for 17.3% of cases, with a seasonal spike in Summer, evenings and weekends. Most incidents occurred at home, predominantly accidental in nature, with adolescents more likely to require EMS services. The common mechanisms of injuries were blunt force (49.2%), slips/falls (22.0%), and motor vehicle collisions (13.2%), leading to bruises, cuts, and sprains. Over the decade, a general increase in pediatric injuries was observed. Accidental injuries initially surged but later stabilized, while self-harm/suicide and assault/violence injuries showed a concerning upward trend. Age-specific analysis revealed increasing trends in infants and adolescents. The study underscores the crucial need for targeted injury prevention and resource allocation strategies, particularly for high-risk groups and times, to effectively mitigate pediatric trauma on Jeju Island.

Regional and rural-urban patterns in the prevalence of diagnosed hypertension among older U.S. adults with diabetes, 2005–2017

BackgroundHypertension prevalence among the overall US adult population has been relatively stable during the last two decades. However, whether this stabilization has occurred across rural-urban communities and across different geographic regions is unknown, particularly among older adults with diabetes who are likely to have concomitant cardiovascular risk factors.MethodsThis serial cross-sectional analysis used the 5% national sample of Medicare administrative claims data (n = 3,516,541) to examine temporal trends (2005–2017) in diagnosed hypertension among older adults with diabetes, across urban-rural communities and US census regions (Northeast, Midwest, South, and West). Joinpoint regression was used to obtain annual percent change (APC) in hypertension prevalence across rural-urban communities and geographic regions, and multivariable adjusted regression was used to assess associations between rural-urban communities and hypertension prevalence.ResultsThe APC in the prevalence of hypertension was higher during 2005–2010, and there was a slowdown in the increase during 2011–2017 across all regions, with significant variations across rural-urban communities within each of the regions. In the regression analysis, in the adjusted model, older adults living in non-core (most rural) areas in the Midwest (PR = 0.988, 95% CI: 0.981–0.995) and West (PR = 0.935, 95% CI: 0.923–0.946) had lower hypertension prevalence than their regional counterparts living in large central metro areas.ConclusionsAlthough the magnitudes of these associations are small, differences in hypertension prevalence across rural-urban areas and geographic regions may have implications for targeted interventions to improve chronic disease prevention and management.

Hypertension Trends and Disparities Over 12 Years in a Large Health System: Leveraging the Electronic Health Records.

The digital transformation of medical data enables health systems to leverage real-world data from electronic health records to gain actionable insights for improving hypertension care. We performed a serial cross-sectional analysis of outpatients of a large regional health system from 2010 to 2021. Hypertension was defined by systolic blood pressure ≥140 mm Hg, diastolic blood pressure ≥90 mm Hg, or recorded treatment with antihypertension medications. We evaluated 4 methods of using blood pressure measurements in the electronic health record to define hypertension. The primary outcomes were age-adjusted prevalence rates and age-adjusted control rates. Hypertension prevalence varied depending on the definition used, ranging from 36.5% to 50.9% initially and increasing over time by ≈5%, regardless of the definition used. Control rates ranged from 61.2% to 71.3% initially, increased during 2018 to 2019, and decreased during 2020 to 2021. The proportion of patients with a hypertension diagnosis ranged from 45.5% to 60.2% initially and improved during the study period. Non-Hispanic Black patients represented 25% of our regional population and consistently had higher prevalence rates, higher mean systolic and diastolic blood pressure, and lower control rates compared with other racial and ethnic groups. In a large regional health system, we leveraged the electronic health record to provide real-world insights. The findings largely reflected national trends but showed distinctive regional demographics and findings, with prevalence increasing, one-quarter of the patients not controlled, and marked disparities. This approach could be emulated by regional health systems seeking to improve hypertension care.

Changes in Age Distribution and Maternal Mortality in a Subset of the U.S., 2014–2021

This study aimed to determine the association between changes in age distribution and maternal mortality rates (MMR) in a subset of the United States between 2014 and 2021. A serial cross-sectional analysis of birthing individuals aged 15-44 years from 2014 to 2021 was performed. States that had not adopted the pregnancy checkbox as of 2014 were excluded from the primary analysis. A significant inflection point in MMR was identified in 2019 with the Joinpoint Regression Program, so all analyses were stratified: 2014-2019 and 2019-2021. The Kitagawa decomposition was applied to quantify the contribution from (1) changes in age distribution and (2) changes in age-specific MMR (ASMR) to total MMR. Data analysis occurred between 2022 and 2023. From 2014 to 2021, the mean (standard deviation) age of birthing individuals changed from 28.3 (5.8) to 29.4 (5.7) years. The MMR (95% CI) increased significantly from 16.5 (15.8-18.5) to 18.9 (17.4-20.5) per 100,000 live births from 2014 to 2019 with acceleration in MMR to 31.8 (30.0-33.8) by 2021. The change in maternal age distribution contributed to 36% of the total change in the MMR from 2014 to 2019 and 4% from 2019 to 2021. Age-specific MMR components increased significantly for those aged 25-29 years and 30-34 years from 2014 to 2019. All 5-year age strata except the 15-19 year old group saw increases in age-specific MMR from 2019 to 2021. MMR increased significantly from 2014 to 2021 with rapid increase after 2019. However, older age of birthing individuals explained only a minority of the increased MMR in both periods. The greatest contribution to MMR arose from increases in age-specific MMR.

Trends in Systemic Glucocorticoid Utilization in the United Kingdom from 1990 to 2019: A Population-Based, Serial Cross-Sectional Analysis.

Associations between systemic glucocorticoid (SGC) exposure and risk for adverse outcomes have spurred a move toward steroid-sparing treatment strategies. Real-world changes in SGC exposure over time, after the introduction of steroid-sparing treatment strategies, reveal areas of successful risk mitigation as well as unmet needs. A population-based ecological study was performed from the Optimum Patient Care Research Database to describe SGC prescribing trends of steroid-sparing treatment strategies in primary care practices before and after licensure of biologics in the United Kingdom from 1990 to 2019. Each analysis year included patients aged ≥5 years who were registered for ≥1 year with a participating primary care practice. The primary analysis was SGC exposure, defined as total cumulative SGC dose per patient per year, for asthma, severe asthma, chronic obstructive pulmonary disease (COPD), nasal polyps, Crohn's disease, rheumatoid arthritis, ulcerative colitis, and systemic lupus erythematosus. Secondary outcomes were percentages of patients prescribed SGCs and number of SGC prescriptions per patient per year. The number of patients who met study inclusion criteria ranged from 219,862 (1990) to 1,261,550 (2019). At the population level, patients with asthma or COPD accounted for 67.7% to 73.2% of patients per year with an SGC prescription. Over three decades, decreases in SGC total yearly dose ≥1000 mg have been achieved in multiple conditions. Patients with COPD prescribed SGCs increased from 5.8% (1990) to 34.8% (2017). SGC prescribing trends for severe asthma, Crohn's disease, and ulcerative colitis show decreased prescribing trends after the introduction of biologics. Decreases in total yearly SGC doses have been shown in multiple conditions; however, for conditions such as severe asthma and COPD, an unmet need remains for increased awareness of SGC burden and the adoption or development of SGC-sparing alternatives to reduce overuse.

Prevented perinatal HIV infections in the era of antiretroviral prophylaxis and treatment, United States, 1994-2020.

The primary aim of this serial cross-sectional analysis is to estimate the total number of prevented perinatal HIV transmissions from the time of the initial recommendation for perinatal zidovudine (ZDV) prophylaxis in 1994 through 2020 in the US. The estimated number of prevented transmissions was calculated as annual differences between expected and observed numbers of perinatal HIV transmissions. Annual expected number of transmissions was estimated by multiplying the annual number of births to women with HIV by 0.2255 (22.55%), i.e., the transmission rate of the control group in the ACTG Protocol 076 trial. We used published point estimates or, if only ranges were given, the midpoints of those ranges as the best estimates of the annual numbers of births to women with HIV and infants with perinatal HIV. When data were not available, we linearly interpolated or extrapolated the available data to obtain estimated numbers for each year. Between 1978 and 2020, the approximate number of live births to women with HIV was 191 267 (95% confidence interval [CI] 190 392-192 110) and for infants with diagnosed perinatal HIV, it was 21 379 (95% CI 21 088-21 695). Since 1994, the annual number of infants born with HIV decreased from 1263 (95% CI 1194-1333) to 33 in 2019 (95% CI 22-45) and 36 in 2020 (95% CI 25-48), corresponding to a 97% reduction. Cumulatively, an estimated total of 22 732 (95% CI 21 340-24 462) perinatal HIV infections were prevented from 1994 through to 2020. The elimination of perinatal HIV transmission-accompanied by the cumulative number of prevented cases exceeding that of perinatal HIV infections-is a major public health achievement in the US.

Trends in Discharge Rates for Acute Pulmonary Embolism in U.S. Emergency Departments.

Outpatient management of select patients with low-risk acute pulmonary embolism (PE) has been proven to be safe and effective, yet recent evidence suggests that patients are still managed with hospitalization. Few studies have assessed contemporary real-world trends in discharge rates from U.S. emergency departments (EDs) for acute PE. To evaluate whether the proportion of discharges from EDs for acute PE changed between 2012 and 2020 and which baseline characteristics are associated with ED discharge. Serial cross-sectional analysis. U.S. EDs participating in the National Hospital Ambulatory Medical Care Survey. Patients with ED visits for acute PE between 2012 and 2020. National trends in the proportion of discharges for acute PE and factors associated with ED discharge. Between 2012 and 2020, there were approximately 1635300 visits for acute PE. Overall, ED discharge rates remained constant over time, with rates of 38.2% (95% CI, 17.9% to 64.0%) between 2012 and 2014 and 33.4% (CI, 21.0% to 49.0%) between 2018 and 2020 (adjusted risk ratio, 1.01 per year [CI, 0.89 to 1.14]). No baseline characteristics, including established risk stratification scores, were predictive of an increased likelihood of ED discharge; however, patients at teaching hospitals and those with private insurance were more likely to receive oral anticoagulation at discharge. Only 35.9% (CI, 23.9% to 50.0%) of patients who were considered low-risk according to their Pulmonary Embolism Severity Index (PESI) class, 33.1% (CI, 21.6% to 47.0%) according to simplified PESI score, and 34.8% (CI, 23.3% to 48.0%) according to hemodynamic stability were discharged from the ED setting. Cross-sectional survey design and inability to adjudicate diagnoses. In a representative nationwide sample, rates of discharge from the ED for acute PE appear to have remained constant between 2012 and 2020. Only one third of low-risk patients were discharged for outpatient management, and rates seem to have stabilized. Outpatient management of low-risk acute PE may still be largely underutilized in the United States. None.

Employer-Sponsored Health Insurance Premium Cost Growth and Its Association With Earnings Inequality Among US Families

Costs of employer-sponsored health care benefits have increased faster than workers' wages for several decades, with important implications for disparities in earnings and wage stagnation. To quantify how growth in employer-sponsored health insurance (ESI) premiums may have been associated with reduced annual wages, disparities in earnings by race and ethnicity and wage level, and wage stagnation among US families with ESI. In this economic evaluation, serial cross-sectional analyses were performed of US families receiving ESI from 1988 to 2019 based on data from the Consumer Expenditure Survey, Kaiser Employer Health Benefits Survey, US Census Bureau's Current Population Survey, and federal payroll taxation rates. Statistical analysis was conducted from February 2022 to July 2023. Percentage of annual compensation associated with health care premiums (after accounting for tax deductibility) and lost wages associated with growth in cost of premiums from 1989 to 2019 based on 1988 compensation. To assess disparities, analyses were stratified by race and ethnicity and wage level. In 1988, 44.7 million individuals (head of household: mean [SD] age, 43.3 [13.1] years; 30.1% were female; and 2.4% identified as Asian, 6.2% as Hispanic, 8.6% as non-Hispanic Black, and 82.8% as non-Hispanic White) were covered by ESI family plans; this number remained similar in 2019 at 44.8 million individuals (head of household: mean [SD] age, 47.1 [12.9] years; 41.3% were female; and 1.3% identified as Asian, 9.9% as Hispanic, 9.9% as non-Hispanic Black, and 78.9% as non-Hispanic White). In 1988, the mean (SD) household size was 3.3 (1.3) people, and in 2019, it was 3.4 (1.3) people. If ESI costs had remained at the same proportion of the 1988 average compensation package, then in 2019, the median US family with ESI could have earned $8774 (95% CI, $8354-$9195) more in annual wages. During all 32 years, health care premiums as a percentage of compensation were greater for non-Hispanic Black and Hispanic families than for non-Hispanic White families. By 2019, 13.8% (95% CI, 13.5%-14.1%) of compensation among non-Hispanic White families with ESI went to premium costs compared with 19.2% (95% CI, 18.8%-19.7%) among non-Hispanic Black families and 19.8% (19.3%-20.3%) among Hispanic families with ESI. In 2019, health care premiums as a percentage of compensation at the 95th percentile of earnings for families with ESI were 3.9% (95% CI, 3.8%-4.0%) compared with 28.5% (95% CI, 27.8%-29.2%) at the 20th percentile of earnings. From 1988 to 2019, the mean cumulative lost earnings associated with growth in health care premiums for the median US family with ESI was $125 340 (95% CI, $120 155-$130 525) in 2019 dollars, 4.7% of earnings over the 32-year period. This economic evaluation of US families receiving ESI suggests that 3 decades of increasing health care premiums were likely associated with reduced annual earnings and increased earnings inequality by race and ethnicity and wage level and were meaningfully associated with wage stagnation.