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Updated Prevalence Estimates Of Obesity Among Adults In The United States, 2005–2018, Ashley W. Kranjac, Dinko Kranjac

Sociology Faculty Articles and Research

Introduction

Body mass index is an imperfect measure of excess adiposity but is ingrained in both research and clinical practice to define and diagnose adult obesity. The addition of waist circumference measure is recommended to fully capture obesity-related health risks at a population level. The latest reframing of obesity by the Lancet Commission relies on body mass index and waist circumference, as well as organ dysfunction and functional limitations, to differentiate between preclinical and clinical obesity.

Methods

Using data from the National Health and Nutrition Examination Survey (2005–2018), we adhere to the proposed redefinition to examine obesity trends in the …

Temporal And Generational Changes In Depression Among Young American Adults, Ashley W. Kranjac, Dinko Kranjac, Valentine Chung

Sociology Faculty Articles and Research

The prevalence of depression among young American adults has risen significantly over the past two decades, but the mechanisms that underlie the population-level changes in depressive symptoms severity remain unclear. We used data from the 2005–2023 National Health and Nutrition Examination Survey (NHANES) and hierarchical age–period–cohort (HAPC) analysis to examine developmental (i.e., age), life stage (i.e., period), and generational (i.e., cohort) distribution of depressive symptoms among American adults aged 20–30 years old over an 18-year period. Our model results indicate that the probability of either mild, moderate, or severe depression increased among young adult females and males between 2005 and …

Age–Period–Cohort Effects Of Adult Cigarette Smoking In The United States, 1971–2020, Dinko Kranjac, Ashley W. Kranjac

Sociology Faculty Articles and Research

The rates of cigarette use among American adults have dropped substantially throughout the last six decades, yet smoking remains the leading cause of preventable disease and death in the United States. It is crucial to identify the putative time-varying population-level factors of age, period, and cohort that influenced the decrease in smoking prevalence so we can maintain the downward trend. We used 49 years of data from the National Health and Nutrition Examination Survey (NHANES) and hierarchical age–period–cohort (HAPC) analysis to examine lifecycle, historical, and generational distribution of smoking among Americans aged 18–74 years old. The prevalence of smoking has …

Explaining Adult Obesity, Severe Obesity, And Bmi: Five Decades Of Change, Ashley W. Kranjac, Dinko Kranjac

Sociology Faculty Articles and Research

Obesity rates have increased across all segments of society since the late 1970s, but the reason behind population-level increases in body weight remains unclear. We used the 1971–2020 NHANES data to examine whether the observed trend in obesity prevalence is attributable to changing public health behaviors (i.e., intracohort change) or changing publics (i.e., cohort replacement). We partitioned total change in mean BMI, and rates of obesity and severe obesity, into its IC and CR components using linear and algebraic decomposition methods. We found that the IC mechanism (i.e., broad sectors of individuals changing) plays a dominant role in the overall …

Obesity Heterogeneity By Neighborhood Context In A Largely Latinx Sample, Ashley W. Kranjac, Dinko Kranjac, Zeev N. Kain, Louis Ehwerhemuepha, Brooke N. Jenkins

Sociology Faculty Articles and Research

Neighborhood socioeconomic context where Latinx children live may influence body weight status. Los Angeles County and Orange County of Southern California both are on the list of the top ten counties with the largest Latinx population in the USA. This heterogeneity allowed us to estimate differential impacts of neighborhood environment on children’s body mass index z-scores by race/ethnicity using novel methods and a rich data source. We geocoded pediatric electronic medical record data from a predominantly Latinx sample and characterized neighborhoods into unique residential contexts using latent profile modeling techniques. We estimated multilevel linear regression models that adjust for …

Spatial Disparities: The Role Of Nativity In Neighborhood Exposure To Alcohol And Tobacco Retailers, Georgiana Bostean, Luis A. Sánchez, Jason A. Douglas

Sociology Faculty Articles and Research

Studies of retail environment, one of the social determinants of health, document racial/ethnic disparities in exposure to alcohol and tobacco (A and T) retailers, but have largely overlooked nativity. We examined associations between A and T retailer density and rates of foreign-born Latinx and foreign-born Asian residents in California census tracts (N = 7888), using spatial regressions and controlling for population and ecological confounders (e.g., population density, zoning, residential instability, urbanicity). Socio-demographic data came from the American Community Survey (2012–2016); census tract density of A and T retailers came from geocoded addresses from state license data for off-sale alcohol distributors …

Child Obesity Moderates The Association Between Poverty And Academic Achievement, Ashley W. Kranjac, Dinko Kranjac

Sociology Faculty Articles and Research

Childhood overweight and obesity are major public health problems in the United States. Children who experience poverty are 1.5 times more likely to suffer with overweight and 1.6 times more likely to have obesity. The extent to which overweight or obesity exacerbates the negative influence of socioeconomic inequality on child academic outcomes has not yet been examined. We estimated the effect of poverty on math and reading achievement trajectories using the Early Childhood Longitudinal Study (ECLS) Kindergarten class of 1998−1999 survey data and multilevel growth curve modeling techniques. Our findings indicate that the impact of obesity status is more pronounced …

Decomposing Differences In Coronavirus Disease 2019-Related Case-Fatality Rates Across Seventeen Nations, Ashley Wendell Kranjac, Dinko Kranjac

Sociology Faculty Articles and Research

As of 1 November 2020, estimated case-fatality rates associated with coronavirus disease 2019 are not uniformly patterned across the world and differ substantially in magnitude. Given the global spatial heterogeneity in case-fatality rates, we applied the Blinder-Oaxaca regression decomposition technique to identify how putative sociodemographic, structural, and environmental sources influence variation in case-fatality rates. We show that compositional and associational differences in country-level risk factors explain a substantial proportion of the coronavirus disease 2019-related case-fatality rate gap across nations. Asian countries fair better vis-à-vis case-fatality rate differences mainly due to variation in returns to sociodemographic, structural, and environmental sources among …

Decomposing Trends In Child Obesity, Ashley Wendell Kranjac, Robert L. Wagmiller

Sociology Faculty Articles and Research

We unravel the absolute level and relative prominence of two demographic processes that are relevant for childhood obesity, and that will ultimately determine the long-term course and pace of change in child obesity rates. We leverage data from the National Health and Nutrition Examination Survey to decompose change in child obesity from 1971 to 2012. We partition change into that attributable to (1) healthier, more nutritionally and economically advantaged cohorts in the population being replaced by cohorts of children who are less advantaged (between-cohort change), and (2) the health habits, nutrition, and social and economic circumstances of all cohorts of …

Smoking Trends Among U.S. Latinos, 1998–2013: The Impact Of Immigrant Arrival Cohort, Georgiana Bostean, Annie Ro, Nancy L. Fleischer

Sociology Faculty Articles and Research

Few studies examine nativity disparities in smoking in the U.S., thus a major gap remains in understanding whether immigrant Latinos’ smoking prevalence is stable, converging, or diverging, compared with U.S.-born Latinos. This study aimed to disentangle the roles of period changes, duration of U.S. residence, and immigrant arrival cohort in explaining the gap in smoking prevalence between foreign-born and U.S.-born Latinos. Using repeated cross-sectional data spanning 1998–2013 (U.S. National Health Interview Survey), regressions predicted current smoking among foreign-born and U.S.-born Latino men and women (n = 12,492). We contrasted findings from conventional regression analyses that simply include period and duration …

E-Cigarette Specialty Retailers: Data To Assess The Association Between Retail Environment And Student E-Cigarette Use, Georgiana Bostean, Catherine M. Crespi, Patsornkarn Vorapharuek, William J. Mccarthy

Sociology Faculty Articles and Research

The retail environment is a major social determinant of health, yet little is known about the e-cigarette specialty retailer environment. The e-cigarette specialty retail environment may be associated with e-cigarette use by middle and high school students, an issue that was addressed in a recent article entitled, “E-cigarette use among students and e-cigarette specialty retailer presence near schools,” by Bostean and colleagues (G. Bostean, C.M. Crespi, P. Vorapharuek, W.J. McCarthy, 2016). We present data relating to e-cigarette specialty retailers in Orange County, California. We describe the data collection method (including the search methodology to identify e-cigarette specialty retailers), present descriptive …