Acculturation and Cardiometabolic Abnormalities Among Chinese and Korean Americans

Heart Failure Among Asian American Subpopulations

Importance

Heart failure (HF) is a leading cause of death in the US. The current evidence on the burdens of HF in Asian American populations, especially Asian American subgroups, is limited and inconsistent.

Objective

To assess and compare the incidence and prevalence of HF in Asian American subgroups.

Design, Setting, and Participants

This retrospective cohort study used electronic health record data from patients 40 years or older with health care encounters from January 1, 2015, to December 31, 2019, recorded in the Oracle Electronic Health Record Real-World Data database, which has more than 100 health care systems across the US contributing to the database as of February 2024. For prevalence analysis, the study samples were those who had at least 1 encounter in the study calendar year. For incidence analysis, participants were additionally limited to those without HF before the study year who also had encounter(s) the year before the study year. Data analysis was performed from August 1, 2023, to July 31, 2024.

Exposure

Race and ethnicity were determined using patient self-reported data, which were categorized as Black, East Asian, South Asian, Southeast Asian, other Asian (without specified ethnicity), and White.

Main Outcomes and Measures

Outcomes were incidence and prevalence of HF, identified using recorded International Classification of Diseases, Ninth Revision, Clinical Modification and International Statistical Classification of Diseases, Tenth Revision, Clinical Modification codes. Age- and sex-standardized incidence and prevalence were used to calculate the risk ratio of each racial and ethnic group compared with White patients.

Results

Incidence and prevalence analyses were performed for 6 845 791 patients (mean [SD] age, 62.1 [12.5] years; 59.9% female; 2.8% Asian, 6.7% Black, and 90.5% White) and for 13 440 234 patients (mean [SD] age, 61.7 [12.7] years; 57.0% female; 2.9% Asian, 7.1% Black, and 90.0% White), respectively. Using the 2015 population as the standard, age- and sex-standardized HF incidence was 2.26% (95% CI, 2.07%-2.45%) for Southeast Asian patients, 1.56% (95% CI, 1.31%-1.82%) for South Asian patients, and 1.22% (95% CI, 1.06%-1.38%) for East Asian patients compared with 1.58% (95% CI, 1.57%-1.59%) for White patients and 2.39% (95% CI, 2.36%-2.42%) for Black patients. Similarly, heterogeneous rates in Asian American subgroups were also observed in the prevalence analysis.

Conclusions and Relevance

In this study of HF outcomes, the disparities between Southeast and East Asian patients were larger than those between Black and White patients, with the estimates in Southeast Asian patients being similar to those of Black patients. These findings reinforce that individual Asian ethnicities and cardiovascular risk factors should be considered in the assessment of HF risks.

Risk of sleep apnea associated with higher blood pressure among Chinese and Korean Americans

OBJECTIVE

This study examines associations between sleep apnea risk and hypertension in a sample of immigrant Chinese and Korean Americans.

DESIGN

The dataset included Chinese and Korean patients ages 50-75 recruited from primary care physicians' offices from April 2018 to June 2020 in the Baltimore-Washington DC Metropolitan Area (n = 394). Hypertension risk was determined using a combination of blood pressure measurements, self-reported diagnosis of hypertension by a medical professional, and/or self-reported use of antihypertensive medications. Linear regression models examined the associations between sleep apnea risk and blood pressure (systolic blood pressure [SBP] and diastolic blood pressure [DBP]). Poisson regression models examined associations sleep apnea risk and hypertension. Models controlled for body mass index (BMI), demographic, and socioeconomic risk factors. We further examined models for potential effect modification by age, gender, Asian subgroup, and obesity, as well as effect modification of daytime sleepiness on the association between snoring and hypertension risk.

RESULTS

High risk of sleep apnea appeared to be associated positively with SBP (β = 6.77, 95% CI: 0.00-13.53), but not with DBP. The association was positive for hypertension, but it was not statistically significant (PR = 1.11, 95% CI: 0.87-1.41). We did not find effect modification of the associations between sleep apnea and hypertension risk, but we did find that daytime sleepiness moderated the effect of snoring on SBP. Snoring was associated with higher SBP, primarily in the presence of daytime sleepiness, such that predicted SBP was 133.27 mmHg (95% CI: 126.52, 140.02) for someone with both snoring and daytime sleepiness, compared to 123.37 mmHg (95% CI: 120.40, 126.34) for someone neither snoring nor daytime sleepiness.

CONCLUSION

Chinese and Korean immigrants living in the U.S. who are at high risk of sleep apnea have higher SBP on average, even after accounting for sociodemographic characteristics and BMI.

CLINICAL TRAIL REGISTRATION

: NCT03481296, date of registration: 3/29/2018.

Cardiometabolic Health in Asian American Children

BACKGROUND

The aim was to compare cardiometabolic health between Asian American children and Non-Hispanic White (NHW) children as well as to compare cardiometabolic health among Asian American children by birthplace.

METHODS

Children aged 6-17 years enrolled in the National Health and Nutrition Examination Survey (NHANES) from 2011 to 2018 who self-identified as non-Hispanic Asian and NHW were included. Among Asian Americans, place of birth was defined as foreign born vs United States (US) born. Regression models were adjusted for age, sex, household income, food insecurity, passive smoke exposure, and body mass index (BMI) z-score.

RESULTS

Among 3369 children, 8.4% identified as Asian American (age 11.7 years) and 91.6% identified as NHW (age 11.7 years). Compared to NHW children, Asian American children had significantly lower BMI z-scores and odds of obesity. Asian American children had higher HOMA-IR, and greater odds of dyslipidemia and microalbuminuria compared to NHW children. Among Asian Americans, 30.5% were foreign born. Compared to foreign-born Asian American children, US-born Asian American children had significantly higher non-HDL, triglycerides, and uric acid, lower HDL, and lower odds of hyperfiltration. There were no differences in blood pressure by racial group or place of birth.

CONCLUSIONS

Although Asian American children have lower odds of obesity, they have significantly worse glucose intolerance, more dyslipidemia, and more microalbuminuria compared to NHW children. US-born Asian American children have worse cardiometabolic health profiles compared to foreign-born Asian Americans.

Acculturation and self-rated health among Chinese and Korean immigrants aged 49 to 75

Background

Given the rapidly growing Asian populations in the U.S. due to immigration, and the aging demographic of Asian immigrants, it is crucial to understand how acculturation shapes health among older adult Asian immigrants. We study the relationship between acculturation and self-rated health (SRH) and moderating roles of age and Asian subgroup.

Methods

Our cross-sectional study consisted of 200 Chinese and 200 Korean immigrants aged 49-75 living in Baltimore-Washington DC metropolitan area, who were recruited from primary care physicians' clinics in Maryland and Northern Virginia. The participants completed the survey either in-person or by phone in their preferred language. Multidimensional proxies were used to measure acculturation: years living in the U.S. (≥23 years, <23 years), English proficiency (fluently/well, so-so, poorly/not at all), and ethnic identity (very Asian, mostly Asian, bicultural/westernized). SRH was measured using the question "How would you rate your general health?" (excellent/very good/good, fair/poor). Poisson regression models with robust error variance examined associations between acculturation and SRH, accounting for socioeconomic and health insurance factors.

Results

Speaking English so-so and fluently/well had 0.73 (95% confidence intervals (CI): 0.55-0.97) and 0.51 (95% CI: 0.30-0.87) times the prevalence of having fair or poor SRH compared to speaking English poorly/not at all, respectively. The magnitudes and statistical significance of these associations were stronger among Chinese participants than Korean participants. Moreover, individuals who self-identified as bicultural/westernized had 0.63 times the prevalence of having fair or poor SRH (95% CI: 0.43-0.92) as those who self-identified as very Asian. The association was more pronounced among older participants (≥58) compared to younger participants (<58).

Conclusion

Further research should identify the possible mechanisms linking acculturation with health to find effective strategies to enhance health among aging Asian immigrant populations.

Cardiometabolic Health in Asian American Children

Background

The aim was to compare cardiometabolic health between Asian American children and Non-Hispanic White (NHW) children as well as to compare cardiometabolic health among Asian American children by birthplace.

Methods

Children aged 6-17 years enrolled in the National Health and Nutrition Examination Survey (NHANES) from 2011-2018 who self-identified as non-Hispanic Asian and NHW were included. Among Asian Americans, place of birth was defined as foreign-born vs United States (US)-born. Regression models were adjusted for age, sex, household income, food insecurity, passive smoke exposure, and body mass index (BMI) z-score.

Results

Among 3369 children, 8.4% identified as Asian American (age 11.7 years) and 91.6% identified as NHW (age 11.7 years). Compared to NHW children, Asian American children had significantly lower BMI z-scores and odds of obesity. Asian American children had higher HOMA-IR and uric acid, and greater odds of dyslipidemia, microalbuminuria and glomerular hyperfiltration compared to NHW children. Among Asian Americans, 30.5% were foreign-born. Compared to foreign-born Asian American children, US-born Asian American children had significantly higher non-HDL, triglycerides, HOMA-IR and uric acid, lower HDL, and lower odds of hyperfiltration. There were no differences in blood pressure by racial group or place of birth.

Conclusions

Although Asian American children have lower odds of obesity, they have significantly worse glucose intolerance, higher serum uric acid levels, more dyslipidemia and more microalbuminuria compared to NHW children. US-born Asian American children have worse cardiometabolic health profiles compared to foreign-born Asian Americans.