A Gene-Acculturation Study of Obesity Among US Hispanic/Latinos: The Hispanic Community Health Study/Study of Latinos

OBJECTIVE

In the United States, Hispanic/Latino adults face a high burden of obesity; yet, not all individuals are equally affected, partly due in part to this ethnic group's marked sociocultural diversity. We sought to analyze the modification of body mass index (BMI) genetic effects in Hispanic/Latino adults by their level of acculturation, a complex biosocial phenomenon that remains understudied.

METHODS

Among 11,747 Hispanic/Latinos adults in the Hispanic Community Health Study/Study of Latinos aged 18 to 76 years from four urban communities (2008-2011), we a) tested our hypothesis that the effect of a genetic risk score (GRS) for increased BMI may be exacerbated by higher levels of acculturation and b) examined if GRS acculturation interactions varied by gender or Hispanic/Latino background group. All genetic modeling controlled for relatedness, age, gender, principal components of ancestry, center, and complex study design within a generalized estimated equation framework.

RESULTS

We observed a GRS increase of 0.34 kg/m 2 per risk allele in weighted mean BMI. The estimated main effect of GRS on BMI varied both across acculturation level and across gender. The difference between high and low acculturation ranged from 0.03 to 0.23 kg/m 2 per risk allele, but varied across acculturation measure and gender.

CONCLUSIONS

These results suggest the presence of effect modification by acculturation, with stronger effects on BMI among highly acculturated individuals and female immigrants. Future studies of obesity in the Hispanic/Latino community should account for sociocultural environments and consider their intersection with gender to better target obesity interventions.

Poor clinical guideline adherence and inappropriate testing for incident lower urinary tract symptoms associated with benign prostatic hyperplasia

BACKGROUND

The American Urological Association makes recommendations for evaluation and testing for lower urinary tract symptoms associated with benign prostatic hyperplasia (LUTS/BPH) to help primary care providers and specialists identify LUTS/BPH and harmful related conditions including urinary retention and prostate or bladder cancer. Our understanding of provider adherence to these Guidelines is limited to single-site or nonrepresentative settings.

METHODS

We analyzed two insurance claims databases: the Optum^® de-identified Clinformatics^® Data Mart database for privately insured males aged 40-64 years (N ≈ 1,650,900 annually) and the Medicare 5% Sample for males aged ≥65 years (N ≈ 546,000 annually). We calculated the annual prevalence of LUTS/BPH and comorbid bladder cancer and bladder stones from 2004 to 2013. We additionally examined LUTS/BPH incidence and adherence to testing guidelines in a cohort of men newly diagnosed with LUTS/BPH in 2009.

RESULTS

While LUTS/BPH prevalence and incidence increased with increasing age, evaluation testing became less common. Urinalysis was the most common testing type but was performed in <60% of incident patients. Serum prostate-specific antigen (PSA) was the second most common test across age groups (range: 15-34%). Prevalence of comorbid bladder cancer (range: 0-4%), but not bladder stones (range: 1-2%), increased with increasing age.

CONCLUSIONS

Although older men were at greater risk of LUTS/BPH than younger men, they were less likely to undergo testing at diagnosis. Recommended testing with urinalysis was poor despite higher prevalence of bladder cancer in older men and a standard recommendation for urinalysis since 1994. Providers should be more cognizant of AUA Guidelines when assessing LUTS/BPH patients.

Disparities in multiple sleep characteristics among non-Hispanic White and Hispanic/Latino adults by birthplace and language preference: cross-sectional results from the US National Health Interview Survey

OBJECTIVE

To investigate whether sleep disparities vary by birthplace among non-Hispanic White (NHW) and Hispanic/Latino adults in the USA and to investigate language preference as an effect modifier.

DESIGN

Cross-sectional.

SETTING

USA.

PARTICIPANTS

254 699 men and women.

METHODS

We used pooled 2004-2017 National Health Interview Survey data. Adjusting for sociodemographic and behavioural/clinical characteristics, survey-weighted Poisson regressions with robust variance estimated prevalence ratios (PRs) and 95% CIs of self-reported sleep characteristics (eg, sleep duration, trouble staying asleep) among (1) foreign-born NHW adults and Hispanic/Latino heritage groups versus US-born NHW adults and (2) Hispanic/Latino heritage groups versus foreign-born NHW adults. We further stratified by language preference in comparisons of Hispanic/Latino heritage groups with the US-born NHW group.

RESULTS

Among 254 699 participants with a mean age±SE 47±0.9 years, 81% self-identified their race/ethnicity as NHW, 12% Mexican, 2% Puerto Rican, 1% Cuban, 1% Dominican and 3% Central/South American. Compared with US-born NHW adults, foreign-born NHW adults were more likely to report poor sleep quality (eg, PR_{trouble staying asleep}=1.27 (95% CI: 1.17 to 1.37)), and US-born Mexican adults were no more likely to report non-recommended sleep duration while foreign-born Mexican adults were less likely (eg, PR_≤5-hours=0.52 (0.47 to 0.57)). Overall, Mexican adults had lower prevalence of poor sleep quality versus US-born NHW adults, and PRs were lowest for foreign-born Mexican adults. US-born Mexican adults were more likely than foreign-born NHW adults to report shorter sleep duration. Regardless of birthplace, Puerto Rican adults were more likely to report shorter sleep duration versus NHW adults. Generally, sleep duration and quality were better among Cuban and Dominican adults versus US-born NHW adults but were similar versus foreign-born NHW adults. Despite imprecision in certain estimates, Spanish language preference was generally associated with increasingly better sleep among Hispanic/Latino heritage groups compared with US-born NHW adults.

CONCLUSION

Sleep disparities varied by birthplace, Hispanic/Latino heritage and language preference, and each characteristic should be considered in sleep disparities research.

Longitudinal Associations of US Acculturation With Cognitive Performance, Cognitive Impairment, and Dementia

US Latinos, a growing, aging population, are disproportionately burdened by cognitive decline and dementia. Identification of modifiable risk factors is needed for interventions aimed at reducing risk. Broad sociocultural context may illuminate complex etiology among culturally diverse Latinos. Among 1,418 older (≥60 years), low-socioeconomic position (SEP) Latinos (predominantly of Mexican descent) in Sacramento, California, we examined whether US acculturation was associated with cognitive performance, cognitive decline, and dementia/ cognitive impairment without dementia over a 10-year period and whether education modified the associations (Sacramento Area Latino Study on Aging, 1998-2008). Analyses used linear mixed models, competing-risk regression, and inverse probability of censoring weights for attrition. Participants with high US acculturation had better cognitive performance (0.21 fewer cognitive errors at grand-mean-centered age 70 years) than those with low acculturation after adjustment for sociodemographic factors, practice effects, and survey language. Results may have been driven by cultural language use rather than identity factors (e.g., ethnic identity, interactions). Rate of cognitive decline and risk of dementia/cognitive impairment without dementia did not differ by acculturation, regardless of education (β = 0.00 (standard error, 0.00) and hazard ratio = 0.81 (95% confidence interval: 0.49, 1.35), respectively). High US acculturation was associated with better cognitive performance among these older, low-SEP Latinos. Acculturation may benefit cognition when SEP is low. Future studies should incorporate extended longitudinal assessments among more diverse groups.

0361 Birthplace Moderates Racial/Ethnic Disparities in Multiple Sleep Characteristics Among Non-Hispanic Whites and Hispanic/Latino Heritage Groups in the United States

Introduction

Sleep duration disparities by Hispanic/Latino heritage exist; however, few studies have additionally investigated sleep quality disparities by heritage and birthplace, nor have studies compared foreign-born to US-born Non-Hispanic Whites (NHWs).

Methods

Using pooled 2004-2017 National Health Interview Survey data, we investigated whether sleep disparities varied by birthplace among adult NHWs and Hispanic/Latino heritage groups. Adjusting for sociodemographic and behavioral/clinical characteristics, survey-weighted Poisson regressions with robust variance estimated prevalence ratios (PRs) and 95% confidence intervals (CIs) of self-reported sleep characteristics. Sleep characteristics were compared among foreign-born NHWs and Hispanic/Latino heritage groups vs. US-born NHWs. Sleep characteristics were also compared across Hispanic/Latino heritage groups vs. foreign-born NHWs.

Results

Among 254,699 participants (Meanage±SE: 47±0.9 years; 49% female), 81% self-identified as NHW (n=207,154), 12% Mexican (n=30,100), 2% Puerto Rican n=5,077), 1% Cuban(n=2,518), 1% Dominican (n=1,658), and 3% Central/South American (n=8,162). Compared to US-born NHWs, foreign-born NHWs were more likely to report &gt;9-hours sleep duration (PR=1.11[95% CI: 1.01-1.21]) and poor sleep quality (e.g., PRtrouble staying asleep=1.27[1.17-1.37]), and US-born Mexicans were no more likely to report shorter sleep duration while foreign-born Mexicans were less likely (PR&lt;6-hours=0.52[0.47-0.57], PR6-&lt;7-hours=0.72[0.68-0.76]). Although US-born and foreign-born Mexicans had lower prevalence of poor sleep quality compared to US-born NHWs, PRs were lowest for foreign-born Mexicans. Compared to foreign-born NHWs, US-born Mexicans were more likely to report shorter sleep duration, but foreign-born Mexicans were no more likely. Regardless of birthplace, Puerto Ricans were more likely (e.g., PR&lt;6-hours=1.37[1.24-1.60]) and Cubans were less likely (e.g., PR&lt;6-hours=0.81[0.68-0.96]) to report shorter sleep duration vs. US-born NHWs. Compared to US-born NHWs, Dominicans reported better sleep duration and quality. Sleep duration and quality did not differ among Dominicans vs. foreign-born NHWs.

Conclusion

Sleep disparities varied by birthplace and Hispanic/Latino heritage. Birthplace of both NHWs and racial/ethnic minority groups should be considered in disparities research.

Support

This work was funded by the Intramural Program at the National Institutes of Health (NIH), National Institute of Environmental Health Sciences (NIEHS, Z1AES103325-01) and the Division of Intramural Research, National Institute on Minority Health and Health Disparities.

US acculturation and poor sleep among an intergenerational cohort of adult Latinos in Sacramento, California

Acculturation may shape the disproportionate burden of poor sleep among Latinos in the United States. Existing studies are limited by unidimensional acculturation proxies that are incapable of capturing cultural complexities across generations. Understanding how acculturation relates to sleep may lead to the identification of modifiable intervention targets. We used multivariable regression and latent class methods to examine cross-sectional associations between a validated multidimensional scale of US acculturation and self-reported poor sleep measures. We analyzed an intergenerational cohort: first-generation (GEN1) older Latinos (Sacramento Area Latino Study on Aging; N = 1,716; median age: 69.5) and second-generation (GEN2) middle-aged offspring and relatives of GEN1 (Niños Lifestyle and Diabetes Study; N = 670; median age: 54.0) in Sacramento, California. GEN1 with high US acculturation, compared with high acculturation towards another origin/ancestral country, had less restless sleep (prevalence ratio [PR] [95% confidence interval (CI)]: 0.67 [0.54, 0.84]) and a higher likelihood of being in the best sleep class than the worst (OR [95% CI]: 1.62 [1.09, 2.40]), but among nonmanual occupations, high intergenerational US acculturation was associated with more general fatigue (PR [95% CI: 1.86 [1.11, 3.10]). GEN2 with high intergenerational US acculturation reported shorter sleep (PR [95% CI]: 2.86 [1.02, 7.99]). High US acculturation shaped sleep differentially by generation, socioeconomic context, and intergenerational acculturative status. High US acculturation was associated with better sleep among older, lower socioeconomic Latinos, but with shorter sleep duration among middle-aged, higher socioeconomic Latinos; results also differed by parental acculturation status. Upon replication, future studies should incorporate prospective and intergenerational designs to uncover sociobehavioral pathways by which acculturation may shape sleep to ultimately inform intervention efforts.

Metabolic Syndrome and Cognitive Impairment among High Socioeconomic, Nondemented Older US Adults

OBJECTIVES

Nondemented cognitive impairment (CI) presents opportunities for early interventions among individuals at risk for dementia. Identification of modifiable determinants is paramount to the development of effective clinical interventions. Metabolic syndrome (MetS) was theorized as a risk factor, but current research yields inconsistent findings. Few studies have examined the association between MetS and CI among US populations, and global results may be ungeneralizable. We investigated the MetS-CI association among high socioeconomic, nondemented older US adults, examining the roles of sociodemographic, clinical, behavioral, and genetic factors.

DESIGN

Cross-sectional.

SETTING

Cooper Clinic of Dallas, Texas: Cooper Center Longitudinal Study (2009-2017).

PARTICIPANTS

A total of 5200 dementia-free older adult Cooper Clinic patients.

MEASUREMENTS

CI was detected with a Montreal Cognitive Assessment (MoCA) score lower than 26. MetS was established based on National Cholesterol Education Program Adult Treatment Panel guidelines. Unadjusted and multivariable log-binomial regression were used to assess the MetS-CI association, with modification assessment by age, sex, education, cardiorespiratory fitness (CRF), and apolipoprotein-ε4 carrier status (APOE-ε4).

RESULTS

MetS was not associated with CI when adjusting for age, sex, minority status, education, and marital status (prevalence ratio [PR] = 1.09; 95% confidence interval = .97-1.23) or when additionally adjusting for body mass index, CRF, alcohol consumption, current smoking status, and APOE-ε4 (PR = 1.07; 95% confidence interval = .80-1.45). The association was not modified by age, sex, CRF, or APOE-ε4 (P for interaction >.05).

CONCLUSION

In contrast with some global and US studies, MetS and CI were not associated among our study population of nondemented older US adults. MetS may not be a suitable intervention target for poor cognitive outcomes among high socioeconomic older US adults, although separate MetS components may have different recommendations. Future studies should explore more diverse older US populations. If replicated, these findings would inform clinical efforts to reduce the burden of poor cognitive outcomes in the United States.