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1.
Biodemography Soc Biol ; 69(2): 102-109, 2024.
Article in English | MEDLINE | ID: mdl-38828740

ABSTRACT

Polygenic scores (PGS) are broadly misconstrued as reflecting direct causal genetic effects on their respective phenotypes. While this assumption might be accurate for some anthropometric traits like height, more complex traits such as educational attainment show very large indirect effects that stem from many sources. One unexplored source of confounding is the possibility of evocative gene-environment correlation (rGE). Using data from the National Longitudinal Study of Adolescent to Adult Health, we examine the relationship between interviewer assessments of respondent appearance as a function of education PGS. We show a bivariate association between educational PGS and 1) perceived grooming, 2) physical attractiveness, and 3) personality. We then regress years of education on the educational PGS and show that very little of the association (~1-2%) is mediated by attractiveness or personality but 7.5% of the baseline association is confounded with how others may perceive grooming. These results highlight the importance of social-behavioral mechanisms that may link specific genotypes to successful transitions through high school and college and continue to bridge research from the social and biological sciences.


Subject(s)
Educational Status , Multifactorial Inheritance , Humans , Female , Male , Multifactorial Inheritance/genetics , Longitudinal Studies , Adolescent , Adult , Personality/genetics , Young Adult , Gene-Environment Interaction , Phenotype
2.
Article in English | MEDLINE | ID: mdl-37862467

ABSTRACT

OBJECTIVES: The educational gradient in late-life health is well established. Despite this, there are still ambiguities concerning the role of underlying confounding by genetic influences and gene-environment (GE) interplay. Here, we investigate the role of educational factors (attained and genetic propensities) on health and mortality in late life using genetic propensity for educational attainment (as measured by a genome-wide polygenic score, PGSEdu) and attained education. METHODS: By utilizing genetically informative twin data from the Swedish Twin Registry (n = 14,570), we investigated influences of the educational measures, familial confounding as well as the possible presence of passive GE correlation on both objective and subjective indicators of late-life health, that is, the Frailty Index, Multimorbidity, Self-rated health, cardiovascular disease, and all-cause mortality. RESULTS: Using between-within models to adjust for shared familial factors, we found that the relationship between educational level and health and mortality later in life persisted despite controlling for familial confounding. PGSEdu and attained education both uniquely predicted late-life health and mortality, even when mutually adjusted. Between-within models of PGSEdu on the health outcomes in dizygotic twins showed weak evidence for passive GE correlation (prGE) in the education-health relationship. DISCUSSION: Both genetic propensity to education and attained education are (partly) independently associated with health in late life. These results lend further support for a causal education-health relationship but also raise the importance of genetic contributions and GE interplay.


Subject(s)
Academic Success , Cardiovascular Diseases , Humans , Educational Status , Twins, Dizygotic/genetics
3.
Hous Policy Debate ; 33(1): 107-128, 2023.
Article in English | MEDLINE | ID: mdl-37275319

ABSTRACT

There is inconsistent evidence as to whether gentrification, the increase of affluent residents into low-income neighborhoods, is detrimental to health. To date, there is no systematic evidence on how gentrification may matter for a range of birth outcomes across cities with varying characteristics. We utilize California's Birth Cohort File (2009-2012), Decennial Census data, and the American Community Survey (2008-2012) to investigate the relationship of gentrification to: preterm birth, low birthweight, and small-for-gestational-age across California. We find that socioeconomic gentrification is uniformly associated with better birth outcomes. Notably, however, we find that only places specifically experiencing increases in non-White gentrification had this positive impact. These associations vary somewhat by maternal characteristics and by type of gentrification measure utilized; discrepancies between alternative measurement strategies are explored. This study provides evidence that socioeconomic gentrification is positively related to birth outcomes and the race-ethnic character of gentrification matters, emphasizing the continued need to examine how gentrification may impact a range of health and social outcomes.

4.
Acad Forensic Pathol ; 12(4): 140-148, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36545301

ABSTRACT

Introduction: In the United States, each state sets its own standards for its death investigation system. These may require independent medical examiners and coroners or allow for the sheriff to assume the role of coroner. Motivated by the well-established fact that counts of officer-involved homicides in official data sets grossly undercount the number of these incidents, we examine the possibility that different death investigation systems may lead to different death classification outcomes. Methods: To examine the potential differences in officer-involved homicide underreporting by presence of sheriff-coroner and violent death type (gunshot, intentional use of force, pursuit, or other vehicle accident), we compare ratios of incidents from both the Federal Bureau of Investigation's Supplementary Homicide Reports and the restricted Multiple-Cause of Death files from the National Vital Statistics System to the Fatal Encounters data across coroner contexts in California between 2000 and 2018; we quantify differences descriptively and examine bivariate tests of means. Results: We find significantly greater underreporting of officer-involved deaths in sheriff-coroner counties in both official data sets for all incidents compared with non-sheriff-coroner counties, independently of the period considered. These underreporting differences in the National Vital Statistics System are robust to restricting to gunshot and intentional use of force deaths, the type of incident expected to be less prone to misclassification in that data set. Conclusions: Officer-involved death underreporting in sheriff-coroner counties necessitates further scrutiny. Disparities in officer-involved death reporting suggest political pressure may play a role in classifying deaths.

5.
Biodemography Soc Biol ; 67(1): 58-70, 2022.
Article in English | MEDLINE | ID: mdl-35156881

ABSTRACT

Data from the Interplay of Genes and Environment across Multiple Studies (IGEMS) consortium were used to examine predictions of different models of gene-by-environment interaction to understand how genetic variance in self-rated health (SRH) varies at different levels of financial strain. A total of 11,359 individuals from 10 twin studies in Australia, Sweden, and the United States contributed relevant data, including 2,074 monozygotic and 2,623 dizygotic twin pairs. Age ranged from 22 to 98 years, with a mean age of 61.05 (SD = 13.24). A factor model was used to create a harmonized measure of financial strain across studies and items. Twin analyses of genetic and environmental variance for SRH incorporating age, age2, sex, and financial strain moderators indicated significant financial strain moderation of genetic influences on self-rated health. Moderation results did not differ across sex or country. Genetic variance for SRH increased as financial strain increased, matching the predictions of the diathesis-stress and social comparison models for components of variance. Under these models, environmental improvements would be expected to reduce genetically based health disparities.


Subject(s)
Twins, Dizygotic , Adult , Aged , Aged, 80 and over , Disease Susceptibility , Humans , Middle Aged , Sweden , Twins, Dizygotic/genetics , United States , Young Adult
6.
J Quant Criminol ; 38(1): 267-293, 2022 Mar.
Article in English | MEDLINE | ID: mdl-37860123

ABSTRACT

Introduction: The most widely used data set for studying police homicides-the Supplementary Homicide Reports (SHR) kept by the Federal Bureau of Investigation-is collected from a voluntary sample. Materials and Methods: Using a journalist-curated database of police-related deaths, we find the SHR police homicide data to be substantially incomplete. This is due to both non-reporting and substantial under-reporting by agencies. Further, our inquiry discloses a pattern of error in identifying "victims" and "offenders" in the data, and finds that investigating agencies are often incorrectly listed as the responsible agency, which seriously jeopardizes police department-level analyses. Finally, there is evidence of sample bias such that the SHR data system is not representative of all police departments, nor is it representative of large police departments. Conclusions: We conclude that the SHR data is of dubious value for assessing correlates of police homicides in the United States, as all analyses using it will reflect these widespread biases and significant undercounts. Analysis of SHR data for these purposes should cease.

7.
J Adolesc Young Adult Oncol ; 11(2): 223-228, 2022 04.
Article in English | MEDLINE | ID: mdl-34283659

ABSTRACT

Purpose: Ethnic disparities in childhood cancer survivor (CCS) mental health have been identified, although prior survivorship research has focused predominantly on non-Hispanic/Latinx (H/L) white survivors. Methods: This study examined the association of acculturation with depressive symptoms and wellbeing among 582 young adult H/L CCS recruited to a population-based study of CCS in Southern California. Results: In multivariable regression models adjusted for covariates, greater identification with both the Hispanic and Anglo cultures was positively associated with wellbeing (p = 0.007 and p < 0.0001, respectively), and Hispanic cultural identification was associated with fewer depressive symptoms (p = 0.04). Conclusions: Greater understanding of unique protective factors among minority CCS may inform tailored interventions promoting mental health.


Subject(s)
Cancer Survivors , Neoplasms , Acculturation , Cancer Survivors/psychology , Child , Humans , Mental Health , Neoplasms/psychology , Survivors , Young Adult
8.
Zootaxa ; 4920(4): zootaxa.4920.4.5, 2021 Feb 02.
Article in English | MEDLINE | ID: mdl-33756647

ABSTRACT

Kenya has a high diversity of agamid lizards and the arid northern frontier area has the highest species richness. Among the Kenyan agama species, Agama lionotus has the widest distribution, occurring from sea level to inland areas in both dry and moist savanna as well as desert areas. This species mostly prefers rocky areas, both in granitic/metamorphic and volcanic rocks, although it also makes use of tree crevices as well as man-made structures. Recently in Marsabit, northern Kenya, a small-sized agama species, distinct from A. lionotus, was collected within a rocky lava desert area. This new species is characterized by its small size (mean SVL ~83 mm) as compared to typical A. lionotus (mean SVL ~120 mm). Past studies have shown the value of adult male throat coloration for the identification of species within the A. lionotus complex. Herein we also highlight female dorsal color pattern, which is a key character for distinguishing the new species from others in the group, including the similar A. hulbertorum. As in A. lionotus, displaying adult males have an orange to yellow head, a vertebral stripe, a bluish body coloration and an annulated white/blue tail. But the most diagnostic character is the coloration of females and non-displaying males, which exhibit a series of regular pairs of dark spots along the vertebrae as far posterior as the tail base. In addition, females have a pair of elongated orange or yellow marks on the shoulders and another on the dorsolateral margins of the abdomen. This study shows that more cryptic species in the Agama lionotus complex may still await discovery. The new species was found inhabiting dark desert lava rocks but should additionally be present in suitably similar sites in the northern frontier area. This underscores the need to re-examine populations of Agama lionotus from different microhabitats in this country.


Subject(s)
Lizards , Animals , Female , Kenya , Male , Tail
9.
J Urban Health ; 98(2): 233-247, 2021 04.
Article in English | MEDLINE | ID: mdl-33594651

ABSTRACT

Gang violence remains an ongoing crisis in many communities in the United States. This paper assesses the potential association of gang-occupied neighborhoods with birth outcomes. Adverse birth outcomes serve as a "barometer" of population health, denoting both poor conditions for human development and portending future public health concerns. We draw upon (1) Los Angeles County Vital Statistics Birth Records (2008-2012), (2) GIS information on gang territory boundaries, (3) LA city geo-coded crime data, and (4) the 2010 U.S. Census and 2006-2010 American Community Survey. We find an association between gang-occupied neighborhoods and adverse birth outcomes; however, this association is largely explained by other neighborhood socio-demographic characteristics, crime notwithstanding. We also find that gangland neighborhoods tend to exacerbate the effects of crime for all birth outcomes, but only significantly so for small for gestational age births. Lastly, gang co-residence, crime, and other neighborhood demographics explain a substantial portion of socioeconomic and racial/ethnic disparities in adverse birth outcomes. Gangland neighborhoods appear to be a novel contributor to both population health and health disparities. Future studies should address these relationships in a broad range of metropolitan settings, paying careful attention to causal linkages and moderating effects of gangs and crime.


Subject(s)
Residence Characteristics , Violence , Cities , Ethnicity , Humans , Los Angeles/epidemiology , United States
10.
Am J Prev Med ; 59(4): 481-492, 2020 10.
Article in English | MEDLINE | ID: mdl-32829968

ABSTRACT

INTRODUCTION: This study examines COVID-19-associated discrimination regardless of infection status. It evaluates the contribution of various risk factors (e.g., race/ethnicity and wearing a face mask) and the relationship with mental distress among U.S. adults in March and April 2020, when the pandemic escalated across the country. METHODS: Participants consisted of a probability-based, nationally representative sample of U.S. residents aged ≥18 years who completed COVID-19-related surveys online in March and April (n=3,665). Multivariable logistic regression was used to predict the probability of a person perceiving COVID-19-associated discrimination. Linear regression was used to analyze the association between discrimination and mental distress. Analyses were conducted in May 2020. RESULTS: Perception of COVID-19-associated discrimination increased from March (4%) to April (10%). Non-Hispanic Black (absolute risk from 0.09 to 0.15 across months) and Asians (absolute risk from 0.11 to 0.17) were more likely to perceive discrimination than other racial/ethnic groups (absolute risk from 0.03 to 0.11). Individuals who wore face masks (absolute risk from 0.11 to 0.14) also perceived more discrimination than those who did not (absolute risk from 0.04 to 0.11). Perceiving discrimination was subsequently associated with increased mental distress (from 0.77 to 1.01 points on the 4-item Patient Health Questionnaire score). CONCLUSIONS: Perception of COVID-19-associated discrimination was relatively low but increased with time. Perceived discrimination was associated with race/ethnicity and wearing face masks and may contribute to greater mental distress during early stages of the pandemic. The long-term implications of this novel form of discrimination should be monitored.


Subject(s)
Asian People , Black or African American , Coronavirus Infections , Masks , Pandemics , Pneumonia, Viral , Social Discrimination , Social Perception , Adult , Black or African American/psychology , Black or African American/statistics & numerical data , Asian People/psychology , Asian People/statistics & numerical data , Betacoronavirus/isolation & purification , COVID-19 , Coronavirus Infections/ethnology , Coronavirus Infections/psychology , Female , Humans , Male , Mental Health/trends , Pneumonia, Viral/ethnology , Pneumonia, Viral/psychology , Psychological Distress , Public Health/methods , Public Health/statistics & numerical data , SARS-CoV-2 , Social Discrimination/prevention & control , Social Discrimination/psychology , Social Discrimination/statistics & numerical data , Surveys and Questionnaires
11.
Otolaryngol Head Neck Surg ; 162(6): 860-866, 2020 Jun.
Article in English | MEDLINE | ID: mdl-32204646

ABSTRACT

OBJECTIVE: To analyze the spatial variation of sociodemographic factors associated with the geographic distribution of new patient visits to otolaryngologists. STUDY DESIGN: Retrospective cross-sectional analysis. SETTING: United States. SUBJECT AND METHODS: Medicare new patient visits pooled from 2012 to 2016 to otolaryngology providers were obtained from the Centers for Medicare and Medicaid Services, and county-level sociodemographic data were obtained from the 2012-2016 American Community Survey. The mean number of new patient visits per otolaryngology provider by county was calculated. The spatial variation was analyzed with negative binomial and geographically weighted regression. Predictors included various neighborhood characteristics. RESULTS: There were 7,199,129 Medicare new patient visits to otolaryngology providers from 2012 to 2016. A 41.7-fold difference in new patient evaluation rates was observed across US counties (range, 11-458.8 per otolaryngology provider). On multivariable regression analysis, median age, sex, work commute time, percentage insured, and the advantage index of a county were predictors for the rate of new patient visits to otolaryngology providers. However, geographically weighted regression demonstrated that the association of a county's disadvantage index, advantage index, percentage insured, and work commute times with new patient visits per provider varied across space. CONCLUSIONS: There are wide geographic differences in the number of new Medicare patients seen by otolaryngologists, and the influence of county sociodemographic factors varied regionally. Further research to analyze the variations in practice patterns of otolaryngologists is warranted to predict future public health needs.


Subject(s)
Medicare/statistics & numerical data , Otolaryngology/organization & administration , Patient Acceptance of Health Care , Practice Patterns, Physicians' , Cross-Sectional Studies , Humans , Retrospective Studies , United States
12.
Med Care Res Rev ; 77(5): 428-441, 2020 10.
Article in English | MEDLINE | ID: mdl-30296886

ABSTRACT

While lower educational attainment is associated with worse health status, education may also affect one's ability to identify need for urgent care. Using data from the 2010 Medicare CAHPS survey, we estimated multivariate logistic models to test the relationship between self-reported educational attainment and the perceived need for urgent care, controlling for health status and other factors. As expected, lower educational attainment was associated with greater reported need for urgent care in bivariate analyses because of poorer health. However, lower educational attainment was associated with less perceived need for urgent care after controlling for health status, particularly for those in poor health. These findings suggest the need for interventions to improve the likelihood that people with less education recognize the need for urgent care, particularly those in poor health and in most need of urgent care.


Subject(s)
Educational Status , Health Status , Aged , Ambulatory Care , Humans , Medicare , Surveys and Questionnaires , United States
13.
SSM Popul Health ; 9: 100470, 2019 Dec.
Article in English | MEDLINE | ID: mdl-31649996

ABSTRACT

OBJECTIVES: Prior studies of the health effects of recessions have shown mixed results. Ecological studies often report a positive relationship between economic downturns and population health while individual-level studies often show that conditions related to recessions are deleterious. Our study examines the spatially and temporally heterogenous effects of the Great Recession (TGR) on adverse birth outcomes, a contemporaneous measure of population health that is highly responsive to changing social conditions. METHODS: We use restricted birth cohort data from California (2004-2012) merged with both county- and tract-level socio-demographic data, to explore birth selectivity and temporal and unemployment effects during TGR on adverse birth outcomes. RESULTS: We find that gestational exposure - more specifically, second trimester exposure - during or adjacent to the months of TGR was generally deleterious for birth outcomes, more so, in some cases, for mothers with lower levels of education, and that increases in county-level unemployment were generally deleterious for birth outcomes. CONCLUSIONS: Although recessionary effects on population health are problematic and may have far-reaching effects, it appears that these effects may be largely universal, even given potential selective fertility favoring advantaged groups.

14.
J Health Soc Behav ; 60(3): 309-325, 2019 09.
Article in English | MEDLINE | ID: mdl-31526017

ABSTRACT

Adverse childhood experiences (ACEs) have powerful consequences for health and well-being throughout the life course. We draw on evidence that exposure to ACEs shapes developmental processes central to emotional regulation, impulsivity, and the formation of secure intimate ties to posit that ACEs shape the timing and context of childbearing, which in turn partially mediate the well-established effect of ACEs on women's later-life health. Analysis of 25 years of nationally representative panel data from the National Longitudinal Study of Youth (NLSY79; n = 3,893) indicates that adverse childhood experiences predict earlier age at first birth and greater odds of having a nonmarital first birth. Age and marital status at first birth partially mediate the effect of ACEs on women's health at midlife. Implications for public health and family policy aimed at improving maternal and child well-being are discussed.


Subject(s)
Adverse Childhood Experiences , Fertility , Women's Health , Adolescent , Adult , Databases, Factual , Female , Humans , Longitudinal Studies , Male , Retrospective Studies , Young Adult
15.
Twin Res Hum Genet ; 22(6): 809-816, 2019 12.
Article in English | MEDLINE | ID: mdl-31544729

ABSTRACT

The Interplay of Genes and Environment across Multiple Studies (IGEMS) is a consortium of 18 twin studies from 5 different countries (Sweden, Denmark, Finland, United States, and Australia) established to explore the nature of gene-environment (GE) interplay in functioning across the adult lifespan. Fifteen of the studies are longitudinal, with follow-up as long as 59 years after baseline. The combined data from over 76,000 participants aged 14-103 at intake (including over 10,000 monozygotic and over 17,000 dizygotic twin pairs) support two primary research emphases: (1) investigation of models of GE interplay of early life adversity, and social factors at micro and macro environmental levels and with diverse outcomes, including mortality, physical functioning and psychological functioning; and (2) improved understanding of risk and protective factors for dementia by incorporating unmeasured and measured genetic factors with a wide range of exposures measured in young adulthood, midlife and later life.


Subject(s)
Gene-Environment Interaction , Twins, Dizygotic/genetics , Twins, Monozygotic/genetics , Adult , Follow-Up Studies , Humans , Middle Aged
16.
Int J Equity Health ; 18(1): 7, 2019 01 11.
Article in English | MEDLINE | ID: mdl-30634987

ABSTRACT

BACKGROUND: Previous studies demonstrated a positive association between perceived discrimination and mental health problems among immigrants in countries that traditionally host immigrants. Recent trends in international migration show that there has been a significant increase in immigrant populations in East Asian countries. These newer host countries have different social contexts from traditional ones, yet mental health among these immigrants and its relationship to discrimination are under-researched. Thus, this study aimed to examine the association between perceived discrimination and depressive symptoms among immigrants in one of the newer host countries, South Korea. Moreover, we investigated if differentiated social support (ethnic, host or other support) serves as a moderator of discrimination for depressive symptoms. METHODS: This study used survey data from the 2012 Korean Social Survey on Foreign Residents (N = 1068), restricted to adults 20 years or older. Multiple linear regression models were conducted to estimate the association between perceived discrimination, social support, and depressive symptoms among immigrants in South Korea. RESULTS: Perceived discrimination showed a strong positive association with depressive symptoms among immigrants, and ethnic and host support was directly positively associated with depressive symptoms. Furthermore, ethnic support moderated the effects of perceived discrimination on depressive symptoms. CONCLUSION: Community-level interventions providing immigrants opportunities to increase social networking members from the same country as well as the native-born in a host country may be helpful resources for improving mental health among immigrants in South Korea. Also, raising awareness of racial discrimination among members in South Korea would be crucial.


Subject(s)
Depression/therapy , Emigrants and Immigrants/psychology , Emigration and Immigration/statistics & numerical data , Ethnicity/psychology , Mental Health Services/statistics & numerical data , Racism/psychology , Social Support , Adult , Aged , Aged, 80 and over , Emigrants and Immigrants/statistics & numerical data , Ethnicity/statistics & numerical data , Female , Humans , Linear Models , Male , Middle Aged , Population Groups , Racism/statistics & numerical data , Republic of Korea , Surveys and Questionnaires , Young Adult
17.
Article in English | MEDLINE | ID: mdl-37073367

ABSTRACT

Objectives: We evaluated the Fatal Encounters (FE) database as an open-source surveillance system for tracking police-related deaths (PRDs). Methods: We compared the coverage of FE data to several known government sources of police-related deaths and police homicide data. We also replicated incident selection from a recent review of the National Violent Death Reporting System. Results: FE collected data on n = 23,578 PRDs from 2000-2017. A pilot study and ongoing data integration suggest greater coverage than extant data sets. Advantages of the FE data include circumstance of death specificity, incident geo-locations, identification of involved police-agencies, and near immediate availability of data. Disadvantages include a high rate of missingness for decedent race/ethnicity, potentially higher rates of missing incidents in older data, and the exclusion of more comprehensive police use-of-force and nonlethal use-of-force data-a critique applicable to all extant data sets. Conclusions: FE is the largest collection of PRDs in the United States and remains as the most likely source for historical trend comparisons and police-department level analyses of the causes of PRDs.

18.
Dev Psychol ; 54(12): 2356-2370, 2018 Dec.
Article in English | MEDLINE | ID: mdl-30335430

ABSTRACT

We examined whether attained socioeconomic status (SES) moderated genetic and environmental sources of individual differences in cognitive performance using pooled data from 9 adult twin studies. Prior work concerning SES moderation of cognitive performance has focused on rearing SES. The current adult sample of 12,196 individuals (aged 27-98 years) allowed for the examination of common sources of individual differences between attained SES and cognitive performance (signaling potential gene-environment correlation mechanisms, rGE), as well as sources of individual differences unique to cognitive performance (signaling potential gene-environment interaction mechanisms, G × E). Attained SES moderated sources of individual differences in 4 cognitive domains, assessed via performance on 5 cognitive tests ranging 2,149 to 8,722 participants. Attained SES moderated common sources of influences for 3 domains and influences unique to cognition in all 4 domains. The net effect was that genetic influences on the common pathway tended to be relatively more important at the upper end of attained SES indicating possible active rGE, whereas, genetic influences for the unique pathway were proportionally stable or less important at the upper end of attained SES. As a noted exception, at the upper end of attained SES, genetic influences unique to perceptual speed were amplified and genetic influences on the common pathway were dampened. Accounting for rearing SES did not alter attained SES moderation effects on cognitive performance, suggesting mechanisms germane to adulthood. Our findings suggest the importance of gene-environment mechanisms through which attained SES moderates sources of individual differences in cognitive performance. (PsycINFO Database Record (c) 2018 APA, all rights reserved).


Subject(s)
Cognition/physiology , Gene-Environment Interaction , Social Class , Adult , Aged , Aged, 80 and over , Female , Humans , Individuality , Male , Middle Aged
19.
Am J Hum Biol ; 30(2)2018 03.
Article in English | MEDLINE | ID: mdl-29193504

ABSTRACT

OBJECTIVES: No studies have focused on socioeconomic disparities in obesity within and between cohorts. Our objectives were to examine income gradients in obesity between birth-cohorts (inter-cohort variations) and within each birth-cohort (intra-cohort variations) by gender and race/ethnicity. METHODS: Our sample includes 56,820 white and black adults from pooled, cross-sectional National Health and Nutrition Examination Surveys (1971-2012). We fit a series of logistic hierarchical Age-Period-Cohort models to control for the effects of age and period, simultaneously. Predicted probabilities of obesity by poverty-to-income ratio were estimated and graphed for 5-year cohort groups from 1901-1990. We also stratified this relationship for four gender and racial/ethnic subgroups. RESULTS: Obesity disparities due to income were weaker for post-World War I and II generations, specifically the mid-1920s and the mid-1940s to 1950s cohorts, than for other cohorts. In contrast, we found greater income gradients in obesity among cohorts from the 1930s to mid-1940s and mid-1960s to 1970s. Moreover, obesity disparities due to income across cohorts vary markedly by gender and race/ethnicity. White women with higher income consistently exhibited a lower likelihood of obesity than those with lower income since early 1900s cohorts; whereas, black men with higher income exhibited higher risks of obesity than those with lower income in most cohorts. CONCLUSIONS: Our findings suggest that strategies that address race and/or gender inequalities in obesity should be cognizant of significant historical factors that may be unique to cohorts. Period-based approaches that ignore life-course experiences captured in significant cohort-based experiences may limit the utility of policies and interventions.


Subject(s)
Income/statistics & numerical data , Obesity/ethnology , Obesity/epidemiology , Socioeconomic Factors , Adult , Aged , Cohort Studies , Cross-Sectional Studies , Female , Humans , Male , Middle Aged , Nutrition Surveys , Risk Factors , Sex Factors , Social Class , United States/epidemiology , Young Adult
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