Recommendations for Interchangeability in a Growing Biosimilar Market in Latin America.

BACKGROUND: Biosimilars offer significant advantages for improving access to biologic treatments in Latin America. However, their uptake has been slow due to misconceptions, regulatory uncertainties, and inadequate pharmacovigilance. OBJECTIVE: To address these issues, Americas Health Foundation convened a multidisciplinary panel of regional experts in biosimilar use and interchangeability from Latin America. The panel assessed the current landscape and recommended steps to enhance access. RESULTS: Key recommendations include strengthening biosimilar regulations, ensuring transparent enforcement, implementing robust pharmacovigilance, and promoting collaboration among stakeholders to educate about the safety, efficacy, and economic advantages of biosimilars and their interchangeability. CONCLUSIONS: By embracing biosimilars and interchangeability, Latin American countries can expand patient access, foster competition, diversify treatment sources, and enhance the sustainability of their healthcare systems. However, achieving these goals requires addressing knowledge gaps and biases among healthcare providers, patients, regulators, and government agencies. This can be accomplished through clear communication and the use of real-world evidence.

Biosimilars offer an opportunity to expand access to crucial biologic treatments in Latin America by providing lower-cost alternatives when patents expire. However, adopting biosimilars has been slow due to misconceptions and regulatory uncertainties. To address this, experts recommend considering approved biosimilars as interchangeable with reference products, allowing for switching without compromising safety or efficacy, with the limitation of switching only once per year. To improve access, well-defined regulations, enforcement, and transparency from regulatory agencies are necessary, along with education for healthcare providers, patients, and other stakeholders to address knowledge gaps and negative perceptions. Improved pharmacovigilance systems and collaboration between stakeholders can help communicate the benefits of biosimilars and interchangeability. By embracing biosimilars, Latin American countries can expand patient access, foster market competition, diversify treatment options, and improve the sustainability of healthcare systems.

Breast cancer diagnosis and staging in Chile: A non-randomized survey-based study to assess frequency and delays. / Diagnóstico y etapificación de cáncer de mama en Chile: estudio por encuesta no probabilística de III a IV frecuencia y tiempos.

Introduction: Breast cancer progression involves physiological mechanisms such as metastasis. Delays in diagnosis and treatment increase the risk of mortality and are associated with barriers to healthcare access. In Chile, breast cancer is highly prevalent, and early diagnosis has improved, although disparities in the disease evolution persist. This study characterized diagnostic and staging tests, waiting times, and sociodemographic profiles to identify delays and inequities in care. Methods: Survey study. Using a non-probabilistic sample, a questionnaire was applied in an encrypted platform with prior informed consent. The instrument collected data on requested tests, associated times, staging, and sociodemographic characteristics. These variables were analyzed using descriptive statistics, tests of association, confidence intervals, and comparison tests using bootstrapping. Results: A sample of 263 persons was obtained. The most requested tests were biopsy (99.62%) and blood tests (80.23%). The median number of tests requested was six (Q1:4, Q3:8), with a mean of 5.87 (standard deviation: 2.24). No significant differences were observed in the percentage of persons from whom the total number of examinations were requested according to the studied variables. The day-hour-result intervals ranged from 1 to 365 days. The median day-hour-result of the biopsy was 15 days (Q1:10, Q3:30). People between 40 and 49 years old, non-residents of the capital city, belonging to income quintile I, with high school education, from the public health system, with late-stage diagnosis had higher median day-hour-result in biopsy. There was no significant difference in the number of requested tests according to staging (I and II, or III and IV). Conclusions: Biopsy in Chile is the test of choice for diagnostic confirmation in breast cancer. Other tests are requested regardless of the diagnosis stage, contrary to the recommendations of clinical guidelines. Cancer prognosis is crucial, especially in countries with greater inequalities.

Introducción: La progresión del cáncer de mama involucra mecanismos fisiológicos como metástasis. Los retrasos en diagnóstico y tratamiento aumentan el riesgo de mortalidad y se asocian a barreras de acceso a la salud. En Chile, el cáncer de mama es altamente prevalente y su diagnóstico temprano ha mejorado, aunque persisten disparidades en el proceso de enfermedad. Este estudio caracterizó exámenes de diagnóstico y etapificación, tiempos de espera y perfiles sociodemográficos para identificar demoras e inequidades en la atención. Métodos: Estudio de encuesta. Utilizando una muestra no probabilística, se aplicó un cuestionario en plataforma encriptada previo consentimiento informado. En el instrumento se recogieron datos de exámenes solicitados, tiempos asociados, etapificación y características sociodemográficas. Estas variables fueron analizadas utilizando estadística descriptiva, test de asociación, intervalos de confianza y test de comparación utilizando . Resultados: Se logró una muestra de 263 personas. Los exámenes más solicitados fueron biopsia (99,62%) y exámenes de sangre (80,23%). La mediana de exámenes solicitados fue de 6 (Q1:4, Q3:8), con media 5,87 (desviación estándar: 2,24). No se observaron diferencias significativas en el porcentaje de personas a quienes se solicitó la totalidad de exámenes según variables estudiadas. Los intervalos día-hora-resultado oscilaron entre 1 y 365 días. La mediana día-hora-resultado de la biopsia fue de 15 días (Q1:10, Q3:30). Las personas entre 40 y 49 años, no residentes de la capital, pertenecientes al quintil I de ingreso, con educación media, del sistema público de salud, con diagnóstico en etapa tardía presentaron mayores medianas de día-hora-resultado en biopsia. No hubo diferencia significativa en la cantidad de exámenes solicitados según etapificación (I a II y III a IV). Conclusiones: La biopsia en Chile es el examen de elección para la confirmación diagnóstica en cáncer de mama. Otros exámenes son solicitados independientemente de la etapa del diagnóstico, existiendo una discordancia con las recomendaciones de la guía clínica. El pronóstico del cáncer es crucial, especialmente en países con mayores inequidades.

Social Markers of Differences in Fruit and/or Vegetable Consumption Among Brazilians: An Intersectional Analysis.

OBJECTIVE: The objective of this study was to examine the differences in fruit and/or vegetable consumption (FVC) among Brazilian adults by examining various social markers, such as gender, race, income, and education level. METHOD: A cross-sectional study of 88,531 Brazilian adults aged 18 years or older who participated in the 2019 National Health Survey was conducted. The dependent variable was irregular FVC (<5 d/wk). Individuals at the highest risk for irregular FVC include those who are men and Black and who have lower education levels and lower income. Individuals at lower risk include those who are women and White and who have higher education levels and higher income. The prevalence of irregular FVC was calculated considering the levels of the social risk index for FVC and the intersections among two, three, and four risk categories. Odds ratio (OR) and 95% confidence interval (CI) analyses were performed to compare groups at higher risk with those at lower risk. RESULTS: The prevalence of irregular FVC was 57.2% in the general population, 38.1% for individuals in the lowest risk group, 47.5% for individuals in one risk category, 57.9% for individuals in two risk categories, 67.6% for individuals in three risk categories, and 74.4% for individuals in the highest-risk group, and there were significant differences at each level. The highest risk group had a 4.36 (95% CI, 3.86-4.92) times greater chance of irregular FVC. CONCLUSIONS: The complex path to promote FVC among the Brazilian population underscores the need for intersectoral policies aimed at reducing inequalities.

Pediatric Morbidity Among Black Haitians in Canada: A Longitudinal Cohort Study.

BACKGROUND: In the U.S., Black children have disproportionately elevated rates of pediatric morbidity compared with White children, but data are lacking for other countries. We studied the extent to which Black Haitians were at risk of pediatric morbidity in Canada. METHODS: We analyzed a retrospective cohort of 736,498 children born in Quebec between 2008 and 2020. We identified Black Haitians using the mother tongue and birth country of parents. The outcome was mortality or hospitalization for infectious diseases, allergy, cancer, and other morbidity between birth and 12 years of age. We estimated hazard ratios (HR) and 95% confidence intervals (CI) for these outcomes, comparing Haitians with non-Haitians in Cox regression models adjusted for patient characteristics. RESULTS: Compared with non-Haitians, Haitians tended to have a greater risk of pediatric mortality, especially before age 2 years (HR 1.56, 95% CI 1.00-2.45). However, Haitian children had a lower risk of hospitalization than non-Haitian children (HR 0.61, 95% CI 0.59-0.63). Haitians were less likely to be hospitalized for infectious diseases, allergies, appendicitis, cancers, fractures, dental caries, and ophthalmologic conditions. Hospitalization rates were low throughout childhood, even though Haitian children were more likely to be born preterm, develop severe neonatal morbidity, and have other adverse outcomes at birth. CONCLUSION: Haitian children have an elevated risk of neonatal morbidity and early childhood mortality, but lower risk of hospitalization compared with non-Haitians in Canada. The reasons for the disparity are unclear, but greater effort is needed to address potential gaps in healthcare among Black children.

Health inequalities in a middle-income country: a systematic review of the Costa Rican case.

Objective: This study systematically reviews evidence of socioeconomic health disparities in Costa Rica, a middle-income country, to elucidate the relationship between socioeconomic status and health outcomes. Methods: Published studies were identified through a systematic review of PubMed (English) and Scielo (Spanish) databases from December 2023 to January 2024, following PRISMA guidelines. Search terms included socioeconomic status, social determinants, social gradient in health, and health inequalities. Results: Of 236 identified references, 55 met the inclusion criteria. Findings were categorized into health inequalities in mortality (among the general population, infants, and older adults), life expectancy, cause-specific mortality, and health determinants or risk factors mediating the association between the social environment and health. The studies indicate higher mortality among the most disadvantaged groups, including deaths from respiratory diseases, violence, and infections. Higher socioeconomic status was associated with lower mortality rates in the 1990s, indicating a positive social gradient in health (RII = 1.3, CI [1.1-1.5]). Disparities were less pronounced among older adults. Urban areas exhibited concentrated wealth and increased risky behaviors, while rural areas, despite greater socioeconomic deprivation, showed a lower prevalence of risky behaviors. Regarding smoking, people living in rural areas smoked significantly less than those in urban areas (7% vs. 10%). Despite the relatively equitable distribution of public primary healthcare, disparities persisted in the timely diagnosis and treatment of chronic diseases. Cancer survival rates post-diagnosis were positively correlated with the wealth of districts (1.23 [1.12-1.35] for all cancers combined). Conclusion: The study highlights the existence of social health inequalities in Costa Rica. However, despite being one of the most unequal OECD countries, Costa Rica shows relatively modest social gradients in health compared to other middle and high-income nations. This phenomenon can be attributed to distinctive social patterns in health behaviors and the equalizing influence of the universal healthcare system.

Self-perception of oral health, gender and employment among Brazilian population.

BACKGROUND: Self-perception of oral health is a recognized indicator, based on a single question. Association among oral health and socioeconomic status has been well established, however in Brazil, no results were found on the relation with type of insertion in labor market. OBJECTIVE: The aim of this study was to describe the prevalence of negative self-perception of oral health and associated factors, according to gender among Brazilian workers population, in 2019. METHODS: The National Health Survey, nationwide household-based survey, carried out in 2019, was used as source of data. Absolute and relative frequencies were calculated to understand the distribution of variables of interest and characterize the sample (n = 54,343). Binary logistic regression was used in the analyses. Odds ratio (OR) was estimated using a 95% confidence interval in bivariate and multivariate analyses. RESULTS: The prevalence of negative self-perception of oral health was 29.3%; in that, 31.0% among men and 27.2% among women. Compared to formal employees, the chance of negative self-perception of oral health among the informal workers was almost 20% higher among men and 13% among women after adjusting for all confounding factors. Unemployed women were 33% more likely to have negative self-perception of oral health. CONCLUSIONS: Self-reported unemployment increased the chance of a negative self-perception of oral health among women; however, the same effect was not observed among men. Why is there a difference? The association between informal work and negative SEOH is relevant in the Brazilian context of work deregulation and growth in the number of people without access to formal employment. The results suggested addressing employment conditions in adult oral health promotion actions, with emphasis on gender differences.

Adequate housing as a social determinant of the health of international migrants and locals in Chile between 2013 and 2022.

BACKGROUND: Adequate housing is a fundamental right and a social determinant of health. It also represents a historically contentious topic in Latin America. Migratory flows to Chile have become increasingly precarious in the past few years, limiting opportunities for adequate housing, with potential repercussions on the health of international migrants and the general population. This study aims to analyse adequate housing as a social determinant of health among international migrants and locals between 2013 and 2022 in Chile. METHODS: Observational cross-sectional study based on repeated versions of the nationally representative Socioeconomic Characterization Survey in Chile. Adequate housing indicators adapted from the United Nations Housing Rights Programme guidelines were analyzed with relation to individual health, distinguishing between the local and international migrant populations. Logistic regression models were fitted for housing indicators with migration as the main independent variable and for short-term and long-term healthcare needs in locals and immigrants with housing as the main dependent variables. Models were adjusted for sociodemographic variables and considered the complex sample design. RESULTS: Descriptive findings indicated higher availability of services and infrastructure among international migrants, and a disadvantage for habitability, location, and affordability by quintiles compared to locals. Logistic regression models, adjusting for demographic variables, revealed significant associations between migration status and overcrowding (OR 6.14, 2022), poor housing materiality (OR 5.65, 2022) and proximity to healthcare centres (OR 1.4, 2022) compared to locals. Experiencing hazardous situations consistently predicted short-term healthcare needs in both migrants (OR = 1.4, 2022) and locals (OR = 2.8, 2022). Overcrowding predicted both long and short-term healthcare needs among locals across the years and long term needs among migrants in 2013 and 2015. CONCLUSIONS: We found significant inequities in adequate housing between migrant populations and locals in Chile, and some inequities among both populations based on structural socioeconomic deprivation. Experiencing hazardous situations emerged as a social determinant of health among international migrants in 2022, potentially suggesting growing challenges related to social exclusion in urban areas. However, limitations such as exclusion criteria of the survey and sample sizes for data on the migrant population potentially suggest that housing challenges and their impact on health are underestimated.

The rise in mortality due to intentional self-poisoning by medicines in Brazil between 2003 and 2022: relationship with regional and global crises.

In recent years, suicide rates in Brazil have increased, but little is known about the temporal behavior and characteristics of suicides due to intentional self-poisoning by medicines. The aim of the present study was to provide an overview of sociodemographic characteristics and place of death related to suicide due to intentional self-poisoning by medicines, to evaluate the trend of mortality rates in Brazil between 2003 and 2022, and its relationship with regional and global crises. Ecological time series study with data from the Mortality Information System of the Brazilian Ministry of Health, related to individuals aged 10 years and over, who committed suicides due to intentional drug overdose, in the period from 2003 to 2022. The analyses were performed in the R environment in RStudio. Between 2003 and 2022, there was a predominance of deaths in women (55.5%), individuals aged 30-49 years (47.2%), of White race/color (53.2%), occurring in health facilities (67.0%), using drugs or unspecified substances (40.4%); a higher concentration in the southern region (22.8%) and a positive trend in mortality rates due to intentional drug overdose, especially from 2016 onwards. A rise of 264% was observed in the comparison of 2022 and 2003. A peculiar sociodemographic profile was observed in the victims of intentional self-poisoning by medicines and a positive temporal trend in mortality rates, especially in a period marked by regional and global crises.

Cholecystocutaneous Fistula.

This image article presents an 88-year-old indigenous woman with a history of several episodes of abdominal pain, for which she went to numerous different hospitals in the countryside, was always treated with analgesics, and then discharged. After a long time, the patient eventually was evaluated with magnetic resonance imaging. The test revealed a displaced gallbladder with thickened walls, multiple stones, and a fistulous tract extending to the skin. This case underscores the significant challenges faced by patients in regions with limited healthcare access, highlighting the impact of delayed diagnosis and inadequate management on patient outcomes.

Ethnic inequalities in coverage and use of women's cancer screening in Peru.

OBJECTIVE: This study aimed to assess ethnic inequalities in the coverage and utilization of cancer screening services among women in Peru. METHODS: Data from the 2017-2023 Demographic and Family Health Survey in Peru were analyzed to evaluate ethnic disparities in screening coverage for breast and cervical cancer, including clinical breast examination (CBE), Pap smear test (PST), and mammography. Measures such as the GINI coefficient and Slope Index of Inequality (SII) were used to quantify coverage and utilization disparities among ethnic groups. RESULTS: The study included 70,454 women aged 30-69. Among women aged 40-69, 48.31% underwent CBE, 84.06% received PST, and 41.69% underwent mammography. It was found inequalities in coverage for any cancer screening (GINI: 0.10), mammography (GINI: 0.21), CBE (GINI: 0.19), and PST (GINI: 0.06), in 25 Peruvian regions. These inequalities were more pronounced in regions with larger populations of Quechua, Aymara, and Afro-Peruvian women. In rural areas, Quechua or Aymara women (SII: -0.83, -0.95, and - 0.69, respectively) and Afro-Peruvian women (SII: -0.80, -0.92, and - 0.58, respectively) experienced heightened inequalities in the uptake of CBE, mammography, and PST, respectively. Like Quechua or Aymara women (SII: -0.50, SII: -0.52, and SII: -0.50, respectively) and Afro-Peruvian women (SII: -0.50, SII: -0.58, and SII: -0.44, respectively) with only a primary education. CONCLUSION: Ethnic inequalities affect breast and cervical cancer screening coverage across regions in Peru. In Quechua, Aymara, and Afro-Peruvian women the uptake of mammography, CBE, and PST was less frequently than their white or mestizo counterparts. These inequalities are attributed to sociodemographic conditions such as lower education levels and residence in rural or non-capital areas.

Disparities in esophageal cancer care: a population-based study.

BACKGROUND: Vulnerable populations potentially have a worse prognosis for cancer. The present study aimed to identify individual and municipal characteristics of access to health, including education, use of health insurance, gross domestic product per capita (GDPpc), and urban aspects, which could impact the prognosis of patients with esophageal cancer. METHODS: Data on urban concentration, administrative hierarchy, GDPpc, individual patient characteristics, and access to healthcare were collected from national and state public databases spanning between 2013 and 2022. The study included cities in the state of Sao Paulo, Brazil. Independent variables such as GDPpc, urban concentration, municipal administrative hierarchy, health insurance status, education level, and individual cancer and patient characteristics were evaluated against the outcomes of overall survival (OS), likelihood of undergoing surgical treatment, and time-to-treatment initiation. RESULTS: A total of 9280 patients with esophageal cancer (85% squamous cell carcinoma and 15% adenocarcinoma) treated in 42 cities were included in the study. In univariate analysis, higher education (hazard ratio [HR] = 0.6; P < .001), female gender (HR = 0.85; P < .001), and having private health insurance (HR = 0.65; P < .001) were identified as protective factors for OS in esophageal cancer. After adjusting for other variables in multivariate analysis, higher education (HR = 0.77; P = .009), female gender (HR = 0.82; P < .001), and private insurance (HR = 0.65; P < .001) remained protective factors. GDPpc was not associated with OS. Urban concentration and hierarchy influenced the likelihood of receiving surgical treatment. Patients from high urban concentrations had shorter time-to-treatment initiation intervals. CONCLUSION: Populations at risk, particularly those with limited access to education and healthcare, face a worse prognosis for esophageal cancer.

Sociodemographic Inequalities in COVID-19 Booster Dose Vaccination Coverage: a Retrospective Study of 196 Provinces in Peru.

BACKGROUND: The COVID-19 vaccination coverage shows variability in booster doses between residency areas or ethnicity. The aim of this study was to evaluate how sociodemographic conditions influence unequal vaccination coverage with booster doses against COVID-19 in Peru. METHODS: A retrospective, ecological study with an evaluation of 196 provinces in Peru. The sociodemographic conditions were evaluated as sources of inequality (sex, age group, educational level, residence area, and ethnic group). The inequality measure used was the GINI, an index that show the inequal vaccination coverage with third and fourth booster doses against COVID-19 in Peruvians provinces. The index allow determinate a higher inequality when the value is near to 1, and a lower inequality when the value is near to 0. Also, the impact of each sociodemographic condition in the general inequality was evaluate with a decomposition analysis of GINI coefficient into Sk (composition effect), Gk (redistribution effect), Rk (differential effect). RESULTS: In provinces evaluated the mean vaccine coverage for the third and fourth booster doses was 57.00% and 22.19%, respectively at twelve months since the beginning of vaccination campaign. The GINI coefficient was 0.33 and 0.31, for the third and fourth booster doses coverage, respectively. In the decomposition analysis, twelve months after the start of the third and fourth dose vaccination campaign, revealed higher Sk values for people living in rural areas (Sk = 0.94 vs. Sk = 2.39, respectively for third and fourth dose), while higher Gk values for Aymara (Gk = 0.92 vs. Gk = 0.92, respectively), Quechua (Gk = 0.53 vs. Gk = 0.53, respectively), and Afro-Peruvians (Gk = 0.61 vs. Gk = 0.61, respectively). Also, higher negative correlation in Rk values for people with elementary education (Rk=-0.43 vs. Rk=-0.33, respectively), aged between 15 and 19 years (Rk=-0.49 vs. Rk=-0.37, respectively), and Aymara (Rk=-0.51 vs. Rk=-0.66, respectively). CONCLUSION: The rural residency area, lower education and Quechua, Aymara or Afro-Peruvians ethnicity determinated inequalities in vaccination coverage with booster doses against COVID-19 in Peruvian provinces.

Prevalence of congenital anomalies and prenatal diagnosis by birth institution (public vs. non-public): indicators of inequality in access to elective termination of pregnancy for fetal anomalies.

Congenital anomalies (CA) encompass all morphological or functional alterations originating prenatally and present at birth. The prenatal diagnosis of these anomalies can significantly impact the overall health of the pregnant individual and may influence her decision regarding the continuation of the pregnancy. In contexts where safe pregnancy termination is not guaranteed by the state, it can lead to unsafe procedures with severe consequences. In our research, we analyzed epidemiological information on CA to develop potential indicators of inequity in access to safe abortion prior to the legalization of legal termination of pregnancy in Argentina. We included cases from 13 public hospitals and 9 non-public subsector hospitals, from the period 2013-2020. Two groups of specific CA were selected: 1) CA capable of being prenatally diagnosed, and 2) CA related to vascular disruptive events. 10/18 of the selected CA capable of being prenatally diagnosed had a significantly higher prevalence in public hospitals (anencephaly, encephalocele, spina bifida, microcephaly, hydrocephalus, holoprosencephaly, hydranencephaly, diaphragmatic hernia, gastroschisis, bilateral renal agenesis). Non public hospitals had higher prenatal detection. Birth prevalence of CA related with vascular disruptive events (limb reduction, Moebius syndrome, amniotic band sequence) were significantly higher in public hospitals. These results suggest disparities in access to prenatal diagnosis and safe abortion based on socioeconomic status. There was a significant gap in access to prenatal diagnosis for CA and possibly to safe elective abortion depending on the type of institution (public vs. non-public).

Experience of Discrimination and Oral Health Self-Perception: A Cross-Sectional Study among Brazilian Adults.

This cross-sectional study investigated the association between experiences of discrimination and oral health self-perception among a probabilistic cluster sample of Brazilian adults who participated in the 2013 National Health Survey. Oral health self-perception was categorized into three groups (very good + good; fair; poor + very poor). Reported experiences of discrimination included attributions based on the respondent's race/skin color, social class, income, occupation, illness, sexual orientation, religion, sex, and age. Covariates included sociodemographic data, oral health conditions, access to healthcare services, health habits, mental health, and participation in social and/or religious activities. Data were analyzed using ordinal logistic regression for non-proportional odds, considering sample weights and complex samples. Among 60,202 adults, 5.84% perceived their oral health as poor + very poor, with a significantly higher proportion among those experiencing discrimination (9.98%). Adults who experienced discrimination were 1.39 times more likely to report a "poor/very poor/fair" oral health self-perception compared to those who did not experience discrimination. Those who suffered discrimination were 1.28 times more likely to have a "very poor/poor" oral health self-perception than their counterparts who were not affected by discrimination. These findings underscore the importance of considering discrimination experiences as part of the social determinants influencing oral health.

Racial inequalities in the development of multimorbidity of chronic conditions: results from a Brazilian prospective cohort.

BACKGROUND: The occurrence of multimorbidity and its impacts have differentially affected population subgroups. Evidence on its incidence has mainly come from high-income regions, with limited exploration of racial disparities. This study investigated the association between racial groups and the development of multimorbidity and chronic conditions in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). METHODS: Data from self-reported white, brown (pardos or mixed-race), and black participants at baseline of ELSA-Brasil (2008-2010) who were at risk for multimorbidity were analysed. The development of chronic conditions was assessed through in-person visits and self-reported diagnosis via telephone until the third follow-up visit (2017-2019). Multimorbidity was defined when, at the follow-up visit, the participant had two or more morbidities. Cumulative incidences, incidence rates, and adjusted incidence rate ratios (IRRs) were estimated using Poisson models. RESULTS: Over an 8.3-year follow-up, compared to white participants: browns had a 27% greater incidence of hypertension and obesity; and blacks had a 62% and 45% greater incidence, respectively. Blacks also had 58% more diabetes. The cancer incidence was greater among whites. Multimorbidity affected 41% of the participants, with a crude incidence rate of 57.5 cases per 1000 person-years (ranging from 56.3 for whites to 63.9 for blacks). Adjusted estimates showed a 20% higher incidence of multimorbidity in black participants compared to white participants (IRR: 1.20; 95% CI: 1.05-1.38). CONCLUSIONS: Significant racial disparities in the risk of chronic conditions and multimorbidity were observed. Many associations revealed a gradient increase in illness risk according to darker skin tones. Addressing fundamental causes such as racism and racial discrimination, alongside considering social determinants of health, is vital for comprehensive multimorbidity care. Intersectoral, equitable policies are essential for ensuring health rights for historically marginalized groups.

The Influence of Social and Developmental Factors on the Timing of Autism Spectrum Disorder Diagnosis of Preschool-Aged Children: Evidence from a Specialized Chilean Center.

We investigated the influence of developmental and social factors on the age of autism diagnosis (AoD) in a cohort of toddlers living in Chile. A cross-sectional study was conducted among 509 preschool children diagnosed with autism spectrum disorder [M = 40.2 months (SD = 8.6), girls: 32%] in the neurodevelopmental unit of a university clinic in Santiago, Chile (2015-2023). Structural changes in the annual trend of AoD were tested. Generalized linear models (gamma distribution) with and without interaction terms were used for the multivariate analysis, adjusting for gender, residential area, year of diagnosis, developmental variables (language regression, delayed walking, and use of expressive verbal language), and primary caregiver age and education level (CEL). 95% confidence intervals of the unstandardized regression coefficients (B) were calculated using 1000 bootstrap resampling to estimate associations. AoD increased between 2021-2022 and decreased in 2023. Female gender (B = 2.72 [1.21-4.23]), no history of language regression (B = 3.97 [1.66-6.28]), and the presence of expressive verbal language at diagnosis (B = 1.57 [0.05-3.08]) were associated with higher AoD. Children whose caregivers had tertiary education were diagnosed earlier than those with ≤ 12 years of formal education. Although the influence of CEL increased with caregiver age, differences between CEL groups were significant only for caregivers aged ≥ 30 years. Improved education and early screening for clinical features of autism among healthcare professionals and the community, with a focus on young children without highly apparent developmental concerns and those from vulnerable social groups, are warranted.

Exploring the "Urban Advantage" in Access to Immunization Services: A Comparison of Zero-Dose Prevalence Between Rural, and Poor and Non-poor Urban Households Across 97 Low- and Middle-Income Countries.

Urban children are more likely to be vaccinated than rural children, but that advantage is not evenly distributed. Children living in poor urban areas face unique challenges, living far from health facilities and with lower-quality health services, which can impact their access to life-saving vaccines. Our goal was to compare the prevalence of zero-dose children in poor and non-poor urban and rural areas of low- and middle-income countries (LMICs). Zero-dose children were those who failed to receive any dose of a diphtheria-pertussis-tetanus (DPT) containing vaccine. We used data from nationally representative household surveys of 97 LMICs to investigate 201,283 children aged 12-23 months. The pooled prevalence of zero-dose children was 6.5% among the urban non-poor, 12.6% for the urban poor, and 14.7% for the rural areas. There were significant differences between these areas in 43 countries. In most of these countries, the non-poor urban children were at an advantage compared to the urban poor, who were still better off or similar to rural children. Our results emphasize the inequalities between urban and rural areas, but also within urban areas, highlighting the challenges faced by poor urban and rural children. Outreach programs and community interventions that can reach poor urban and rural communities-along with strengthening of current vaccination programs and services-are important steps to reduce inequalities and ensure that no child is left unvaccinated.

Racial health disparities: a population-based analysis of physical activity and diabetes-related complications in Brazil.

OBJECTIVES: Racial disparity in physical activity in people with diabetes in Brazil remains scarcely investigated. We examined the association between physical activity and diabetes-related complications according to race in the Brazilian population. STUDY DESIGN: Cross-sectional. METHODS: We analyzed data from the 2019 National Health Survey, a population-based survey of Brazilian adults. We used a self-reported questionnaire to assess physical activity during commuting, leisure-time, domestic, and occupational activities. Diabetes-related complications included vision, kidney, and circulatory impairment, foot ulcers, diabetic coma, and all-cause complications. We used robust Poisson regression models with restricted cubic splines to examine the association between physical activity and diabetes-related complications. RESULTS: We included 2529 adults with diabetes (48.9% women; mean age: 53.5 ± 11.9 years). One-third experienced diabetes-related complications. Black adults performed less leisure-time and more occupational and commuting physical activity than White participants. Black participants showed a higher probability of all-cause (1.61; 95%CI: 1.29, 2.02) and vision complications (1.58; 95%CI: 1.23, 2.04) compared to White participants independent of physical activity status. Only leisure-time physical activity was associated with a reduced probability of all-cause complications (PR: 0.78; 0.71, 0.86) whereas commuting and occupational physical activity were not associated with any diabetes-related complications. Physically inactive, Brown adults showed a higher probability of kidney, circulatory, vision, and all-cause complications than active, White adults. However, physical activity attenuated the probability of these complications in Brown participants. CONCLUSION: The association between physical activity and diabetes-related complications is domain-specific. We revealed a racial disparity in physical activity in people with diabetes in Brazil.

Uncovering physical activity trade-offs in transportation policy: A spatial agent-based model of Bogotá, Colombia.

BACKGROUND: Transportation policies can impact health outcomes while simultaneously promoting social equity and environmental sustainability. We developed an agent-based model (ABM) to simulate the impacts of fare subsidies and congestion taxes on commuter decision-making and travel patterns. We report effects on mode share, travel time and transport-related physical activity (PA), including the variability of effects by socioeconomic strata (SES), and the trade-offs that may need to be considered in the implementation of these policies in a context with high levels of necessity-based physical activity. METHODS: The ABM design was informed by local stakeholder engagement. The demographic and spatial characteristics of the in-silico city, and its residents, were informed by local surveys and empirical studies. We used ridership and travel time data from the 2019 Bogotá Household Travel Survey to calibrate and validate the model by SES. We then explored the impacts of fare subsidy and congestion tax policy scenarios. RESULTS: Our model reproduced commuting patterns observed in Bogotá, including substantial necessity-based walking for transportation. At the city-level, congestion taxes fractionally reduced car use, including among mid-to-high SES groups but not among low SES commuters. Neither travel times nor physical activity levels were impacted at the city level or by SES. Comparatively, fare subsidies promoted city-level public transportation (PT) ridership, particularly under a 'free-fare' scenario, largely through reductions in walking trips. 'Free fare' policies also led to a large reduction in very long walking times and an overall reduction in the commuting-based attainment of physical activity guidelines. Differential effects were observed by SES, with free fares promoting PT ridership primarily among low-and-middle SES groups. These shifts to PT reduced median walking times among all SES groups, particularly low-SES groups. Moreover, the proportion of low-to-mid SES commuters meeting weekly physical activity recommendations decreased under the 'freefare' policy, with no change observed among high-SES groups. CONCLUSIONS: Transport policies can differentially impact SES-level disparities in necessity-based walking and travel times. Understanding these impacts is critical in shaping transportation policies that balance the dual aims of reducing SES-level disparities in travel time (and time poverty) and the promotion of choice-based physical activity.

The socio-colonial history of Surinamese surnames applied to a validated surname list to identify ancestry in health research.

Around half of the population of Suriname, who are mainly of African and South Asian descent, migrated to the Netherlands at the end of the previous century, where they face higher perinatal and maternal mortality and up to 5 years lower life expectancy than European-Dutch. Analyses by ancestry are needed to address these inequalities, but the law prohibits registration by ancestry. Therefore, a list of Surinamese surnames was compiled and validated to identify the largest groups, African-Surinamese or South Asian-Surinamese ancestry in health research. A complete database of Surinamese surnames was provided by the National Population Registry of Suriname. Surname recognition by researchers of Surinamese ancestry was used. Disagreement was resolved using historical registers and through discussion. The list was further validated against contemporary lists of Surinamese surnames with self-defined ancestry, obtained during population and clinical studies in Suriname and the Netherlands. All 71,529 Surinamese surnames were encoded, as African-Surinamese (34%), South Asian-Surinamese (18%), Brazilian or other Iberian (17%), Indonesian-Surinamese (13%), Chinese-Surinamese (5%), First Nation (2%), and other (10%). Compared to self-defined ancestry, South Asian-Surinamese surname coding had 100% sensitivity, 99.8% specificity, and 99.9% accuracy. For African-Surinamese, who may have Dutch surnames, these values depended on geocoding. With a known Surinamese origin, sensitivity, specificity, and accuracy were, respectively, 97.3%, 100%, and 98.6%, but without this information, there was interference of African-Surinamese with European-Dutch surnames in the Dutch validation sample. In conclusion, the Surinamese Surname List has a high accuracy in identifying persons of Surinamese ancestry. This quick, inexpensive, and nonintrusive method, which is unaffected by response bias, might be a valuable tool in public health research to help address the profound health disparities by ancestry.