Hypertension in Asian/Pacific Island Americans

Gender and Sex-Based Differences in Hypertension Risk Factors Among Non-Hispanic Asian Adults in the United States

INTRODUCTION

The prevalence of hypertension (HTN) is rising at an accelerated rate, and it remains the primary factor contributing to cardiovascular illnesses. Sex can serve as an influencing factor, leading to variations in the factors affecting HTN.

OBJECTIVE

This study aimed to investigate gender and sex differences in the prevalence of HTN and explore the associations between HTN and 4 categories of risk factors: demographics, habits or lifestyle, body measurement, and laboratory blood results among non-Hispanic Asians in the United States.

METHODS

This secondary analysis included non-Hispanic Asian adults aged 18 years or older from the 2017 to 2018 National Health and Nutrition Examination Surveys.

RESULTS

Among the 815 participants, 35% of men (140 of 399) and 37% (154 of 416) of women had HTN (P = .610). The mean age for men is 46.03 ± 16.9 years, whereas the mean age for women is 49.24 ± 16.8 years. After regression analysis, advancing age, increased body mass index, and increased serum uric acid were significant predictors of HTN in both sexes. However, men developed HTN earlier compared with women. Marital status and increased fasting glucose were only significant in men. Compared with their never-married counterparts, men who were currently married or living with a partner had lower odds of having HTN (odds ratio, 0.28; P = .034).

CONCLUSIONS

There was no significant difference in the prevalence of HTN between the sexes. Age, body mass index, and serum uric acid were significant risk factors in both men and women. Meanwhile, marital status and fasting glucose were only significant in men.

Nutrition and diet in the general U.S. Asian American population: A scoping review protocol

INTRODUCTION

Asian American populations face unique structural/social inequities contributing to poor diet quality and health disparities. The current body of literature on diet and food consumption of Asian Americans mainly focuses on the health of Filipino and East Asian Americans, or those with pre-existing non-communicable diseases.

OBJECTIVE

The aim of this review is to comprehensively compile all available literature on nutrition and dietary consumption among the general population in Asian American ethnic subgroups, highlight any disparities and research gaps, and suggest further research action.

METHODS

With guidance from a research librarian, we enumerated and searched key terms related to diet, food, nutrition, and Asian Americans in PubMed/MEDLINE, Food Science Collection (CABI Digital Library), CINAHL (EBSCO), Scopus, Food Science and Technology Abstracts (Web of Science), and Biological & Agricultural Index Plus (EBSCO) in accordance with PRISMA-S guidelines. An article will be included if it was published in the English language; is a peer-reviewed research manuscript or published in grey literature from 2000 to present; and describes what food groups and macronutrients healthy non-institutionalized Asian Americans in the U.S. are eating. An article will be excluded if it contains only research conducted outside of the U.S.; combines Asian Americans with Native Hawaiian and Pacific Islanders; and had no explicit focus on Asian American nutrition and dietary consumption. Two or more reviewers will participate in the study screening and selection process. We will record article characteristics, diet outcomes, and recommendations from final included articles using a data extraction table and prepare a summary narrative with key findings.

EXPECTED OUTPUTS

Results will be disseminated through a peer-reviewed manuscript. The findings from this review can have broad implications for designing and implementing nutrition-focused initiatives that will appropriately reflect and address the needs as well as norms and values of each distinct Asian American ethnic subgroup.

Turning the Health Equity Lens to Diversity in Asian American Health Profiles

The monolithic misrepresentation of Asian American (AsAm) populations has maintained assumptions that AsAm people are not burdened by health disparities and social and economic inequities. However, the story is more nuanced. We critically review AsAm health research to present knowledge of AsAm health profiles from the past two decades and present findings and opportunities across three topical domains: (a) general descriptive knowledge, (b) factors affecting health care uptake, and (c) effective interventions. Much of the literature emphasized underutilization of health care services; low knowledge and awareness among AsAms about health-related risk factors, prevention, diagnosis, and treatment; inadequate efforts by health systems to improve language access, provider-patient communication, and trust; and the critical roles of community- and faith-based organizations and leaders in health promotion initiatives. Future opportunities for AsAm health research will require adoption of and significant investment in community-engaged research infrastructure to increase representation, funding, and research innovation for AsAm communities.

The Impact of COVID-19 on Hypertension and Hypertension Medication Adherence Among Underrepresented Racial and Ethnic Groups: A Scoping Review

PURPOSE OF REVIEW

To conduct a scoping review of articles which examined the impact of COVID-19 on HTN and HTN medication adherence among underrepresented racial/ethnic minorities.

RECENT FINDINGS

Seven studies were included in this review and impact of COVID-19 was examined at 4 levels: patient, provider, health system and society. The results indicated that patient level factors, such as high unemployment and inequitable access to telemedicine due to society factors- lack of access to high-speed Internet and variation in the offering of telehealth by health systems, were most impactful on adherence. Additionally, provider level clinical inertia may have further impacted adherence to HTN medication. Our review showed that the COVID-19 pandemic did not introduce new barriers but exacerbated preexisting barriers. Ongoing efforts are needed to change policies at the state and local levels to dismantle inequities in underrepresented communities to ensure access to health care with telemedicine to promote health equity.

Health Disparities Investigator Development through a Team-Science Pilot Projects Program

Profound health disparities are widespread among Native Hawaiians, other Pacific Islanders, and Filipinos in Hawai'i. Efforts to reduce and eliminate health disparities are limited by a shortage of investigators trained in addressing the genetic, socio economic, and environmental factors that contribute to disparities. In this conference proceedings report from the 2022 RCMI Consortium National Conference, we describe our mentoring program, with an emphasis on community-engaged research. Elements include our encouragement of a team-science, customized Pilot Projects Program (PPP), a Mentoring Bootcamp, and a mentoring support network. During 2017-2022, we received 102 PPP preproposals. Of these, 45 (48%) were invited to submit full proposals, and 22 (19%) were awarded (8 basic biomedical, 7 clinical, 7 behavioral). Eighty-three percent of awards were made to early-career faculty (31% ethnic minority, 72% women). These 22 awards generated 77 related publications; 84 new grants were submitted, of which 31 were awarded with a resultant return on investment of 5.9. From 5 to 11 investigators were supported by PPP awards each year. A robust usage of core services was observed. Our descriptive report (as part of a scientific conference session on RCMI specialized centers) focuses on a mentoring vehicle and shows how it can support early-stage investigators in pursuing careers in health disparities research.

Associations between physical activity and functional limitations in Native Hawaiian and Pacific Islander middle-aged and older adults in the United States

OBJECTIVES

Physical activity (PA) can help individuals maintain physical function and independence. The association between PA and functional limitations (FL) has not been explored in the Native Hawaiian and Pacific Islander (NHPI) population. The purpose of this study was to examine relationships between PA and FL among NHPI adults (age ≥ 45 years) living in the United States.

DESIGN

Cross-sectional data from the 2014 NHPI-National Health Interview Survey (N = 628) was used to create three constructs of FL based on responses from the Functioning and Disability Survey Module: needing equipment/assistance, having difficulty walking, and having difficulty with performing self-care and other fine motor activities. We used 2-stage least squares regression to examine the relationship between PA and FL of NHPI adults while accounting for the potential endogeneity of PA to FL.

RESULTS

Compared to NHPI adults who met the guideline for recommended levels of aerobic and strengthening PA, those who met only the strengthening guideline experienced less difficulty in two FL constructs (use of medical equipment/assistance and difficulty walking). Those who met the aerobic guideline reported even less difficulties in all three FL constructs. NHPI adults who met both the aerobic and strengthening guidelines experienced the least difficulties in all three FL constructs compared to those who met neither PA guidelines.

CONCLUSIONS

PA is associated with function in this adult NHPI population. Aerobic guidelines alone may be more beneficial than meeting the strengthening guideline alone; however, meeting both the aerobic and strengthening guidelines is most protective against FL.

Disparity in Obesity and Hypertension Risks Observed Between Pacific Islander and Asian American Health Fair Attendees in Los Angeles, 2011-2019

INTRODUCTION

The Pacific Islander American population is understudied due to being aggregated with Asian Americans. In this study, we conduct a comparative analysis of directly measured body mass index (BMI), body fat percentage (%BF), and blood pressure (BP) between Pacific Islander Americans and Asian Americans from health screenings in Los Angeles, California. We hope to reveal intra-APIA health disparities masked by this data aggregation.

METHODS

We analyzed BMI, %BF, and BP that were objectively measured by trained personnel at health screenings in Los Angeles between January 2011 and December 2019. We performed multivariable multinomial logistic regression models with obesity and hypertensive categories as outcome variables and ethnicity as the primary independent variable of interest. Models controlled for year of visit, participant age, sex, income, education level, years living in the USA, employment status, English proficiency, regular doctor access, and health insurance status.

RESULTS

A total of 4,832 individuals were included in the analysis. Multivariable analyses revealed that Pacific Islander participants were at significantly higher risks for being classified as obese compared with all Asian American subgroups studied, including Chinese, Korean, Thai, Vietnamese, Filipino, and Japanese. Pacific Islanders also exhibited significantly lower predicted probability of having a normal blood pressure compared with Chinese and Thai participants. Some variation between Asian subgroups were also observed.

CONCLUSIONS

Pacific Islander participants had higher risk of several sentinel health problems compared to Asian American participants. Disaggregation of PI Americans from the APIA umbrella category in future studies is necessary to unmask the critical needs of this important community.

Hypertension Prevalence, Treatment, and Related Behaviors Among Asian Americans: An Examination by Method of Measurement and Disaggregated Subgroups

BACKGROUND

Data on hypertension among Asian Americans is lacking and often aggregated, which can mask important ethnic differences. This study aims to provide a comprehensive view of hypertension and hypertension-related behaviors, including hypertension treatment, management, and information seeking, among Chinese, Korean, and Vietnamese Americans.

METHODS

Data were collected from 600 foreign-born Asian Americans (201 Chinese, 198 Korean, and 201 Vietnamese participants) in the Washington-Baltimore metropolitan area, aged 18 years and over, from 2013 to 2014. Hypertension was assessed using direct measurement and self-report of having ever been told by a physician. Hypertension prevalence was compared based on the method of assessment, ethnicity, and sex.

RESULTS

The age-adjusted hypertension prevalence from direct measurement was 27.5%, which is higher than the 2011-2014 National Health and Nutrition Examination Survey estimate for Asians (24.9%). Hypertension prevalences from self-report among Chinese, Korean, and Vietnamese were 13.4%, 23.2%, and 22.9%, respectively, which are lower than 2014 California Health Interview Survey estimates (15.6%, 18.4%, and 25.8%) with the exception of Korean participants. In regard to hypertension-related behaviors, 67.8% of hypertensive adults received management, 64.3% took antihypertensive medication, and 67.0% sought information to improve their hypertension.

CONCLUSIONS

Disaggregated data on hypertension based on measured blood pressure may prevent underestimation from self-report, particularly among those with limited healthcare access. More accurate and objective assessment of hypertension is needed for improved monitoring of hypertension among Asian-American subgroups.

Physical Activity, Nutrition, and Obesity among Pacific Islander Youth and Young Adults in Southern California: An Exploratory Study

This exploratory study aimed to assess obesity, physical activity, and nutrition among Pacific Islander youth and young adults in Southern California. A total of 129 Tongan, Samoan, and Marshallese participated in the study, including relatively similar proportions of males and females and age groups. We calculated Body Mass Index (BMI), dietary intake by a food frequency questionnaire (FFQ), and 7-day physical activity levels with accelerometers. Overall, 84% of Tongan, 76% of Samoan, and 24% of Marshallese participants were overweight or obese, with mean BMI of 31.2 and 34.3 kg/m2 (for Tongan males and females), 32.3 and 33.4 kg/m2 (Samoan males and females), and 25.3 and 22.1 kg/m2 (Marshallese males and females). We found moderate- and vigorous-intensity physical activity (MVPA) fell below current guidelines at 38 min/day, with over 87% engaging in light-intensity PA and large sedentary times. Daily percent of energy from saturated fat, fiber/1,000 kcal and dairy intake were higher in Tongans compared to Samoans and Marshallese. Despite promising outcomes from this study, high prevalence of overweight, low physical activity levels, and high caloric intake put Pacific Islander youth and young adults at risk for a variety of health concerns and future efforts should focus on further research as well as community-wide prevention and amelioration efforts.

Cardiometabolic health in Asians with diabetes in the US

AIMS

Asians develop diabetes at lower levels of adiposity than people of other race/ethnicities. However, there is limited data investigating the health of US Asians with diabetes. We compared cardiovascular risk factors in US Asians to other race/ethnicities stratified by diabetes status.

METHODS

Among 4645 adults in the 2011-2014 National Health and Nutrition Examination Survey (NHANES), a cross-sectional survey of the US population, odds ratios were calculated for obesity, hypertension, and elevated low-density lipoprotein (LDL) cholesterol associated with race/ethnicity after adjustment for age, sex, income, education, smoking, alcohol consumption, and health insurance.

RESULTS

Overall and stratified by diabetes status, non-Hispanic whites, non-Hispanic blacks, and Mexican-Americans were significantly more likely to be obese compared to non-Hispanic Asians after adjustment. Overall and stratified by diabetes status, adjusted levels of hypertension compared to non-Hispanic Asians was generally similar for non-Hispanic whites and Mexican-Americans and generally more common among non-Hispanic blacks; among those with diagnosed diabetes, the adjusted odds ratios (95% confidence interval) were 1.48 (0.79-2.77), 2.54 (1.49-4.30), and 1.38 (0.73-2.60) for non-Hispanic whites, non-Hispanic blacks, and Mexican-Americans, respectively. Overall and stratified by diabetes status, elevated LDL cholesterol levels were generally similar between non-Hispanic Asians and other race/ethnicities; among those with diagnosed diabetes, the adjusted odds ratios (95% confidence interval) were 0.88 (0.32-2.43), 0.58 (0.24-1.42), and 1.15 (0.29-4.58) for non-Hispanic whites, non-Hispanic blacks, and Mexican-Americans, respectively.

CONCLUSIONS

Although non-Hispanic Asians had lower levels of adiposity compared to other race/ethnicities with diabetes, their adjusted levels of hypertension and LDL cholesterol were generally more comparable.

A multicenter cohort study of primary hypertension in Korea: study design and interim analysis of the Korean registry of target organ damage in hypertension (KorHR)

BACKGROUND

The Korean Registry of Target Organ Damage in Hypertension aims to evaluate the clinical characteristics and prevalence of subclinical target organ damage in Korean hypertensive patients.

METHOD

This is a prospective, observational, multicenter cohort study in which 23 university hospitals participated. Since May 2013, we have enrolled 1,318 consecutive hypertensive patients without known cardiovascular disease who met the following inclusion criteria: 1) age older than 30 years and 2) the first visit to the participating hospitals was within the last 5 years.

RESULTS

The mean age was 52 ± 12 years; 62.1% were male, and 41.3% were incident hypertensives. Patients with diabetes mellitus accounted for 7.8% of the population and 43.8% had hyperlipidemia or were on statins at baseline. The mean office blood pressures were 152 ± 20/96 ± 14 mmHg for incident hypertensive patients and 129 ± 13/78 ± 10 mmHg for patients on treatment. Patients with electrocardiographic and echocardiographic left ventricular hypertrophy accounted for 18.9 and 25.6%, respectively. The mean brachial-ankle pulse wave velocity (PWV) was 1564 ± 293 m/s and 19.5% had PWV values of more than 1750 cm/s. Patients with microalbuminuria and chronic kidney disease accounted for 21 and 4%, respectively. The first prescribed class of antihypertensive medications was angiotensin converting enzyme inhibitors in 2.9%, angiotensin receptor blockers (ARBs) in 57.5%, diuretics in 7.6%, calcium channel blockers (CCBs) in 61.0%, beta blockers in 17.3%, and fixed dose combination pill in 27.8%.

CONCLUSION

Our interim analysis shows that subclinical target organ damage in hypertension is considerably present for incident or treated hypertensive patients. CCBs and ARBs were the most commonly prescribed classes of antihypertensive medications and fixed dose combination pills were actively used in Korea.

TRIAL REGISTRATION

NCT01861080. Registered 16 May 2013.

Disparity in metabolic risk factors of non-communicable diseases between Palauans and Filipinos living in Palau

Non-communicable diseases have been recognized as a serious threat to public health in Palau. To tackle the problem, different strategies might be necessary for populations with different ethnic backgrounds. This study aims to find the differences in the prevalence of metabolic risk factors of non-communicable diseases between Palauans and Filipinos living in Palau, and examine possible determinants of the differences. We selected data of 2,032 participants, including native Palauans and Filipinos, from the Palau STEPS Survey 2011-2013 for this study. Logistic regression models were used to inspect the association of each metabolic risk factor with ethnicity by calculating odds ratios adjusted for potential confounding factors. Palauans had higher age-standardized prevalence of overweight or obesity (84% vs. 45%), hypertension (50% vs. 38%) and diabetes (19% vs. 13%) than Filipinos. However, after adjusting for BMI and various lifestyle related factors, there are no statistical significant differences in the prevalence of hypertension and diabetes between these two ethnic groups. Palauan men were less likely to have elevated total cholesterol, especially after adjusting for BMI (odds ratio=0.55, 95% confidence interval: 0.33-0.91), while Palauan women were more likely to have elevated triglycerides than their Filipino counterparts (odds ratio=1.45, 95% confidence interval: 1.02-2.06). Our findings suggested that Palauans' higher BMI distribution might be able to explain their higher prevalence of hypertension and partially explain their higher diabetes prevalence. Palauans were not consistently more likely to have all metabolic risk factors, namely dyslipidemia were less likely to be observed in Palauan men.

Sodium Intake among US School-Aged Children: National Health and Nutrition Examination Survey, 2011-2012

BACKGROUND

Identifying current major dietary sources of sodium can enhance strategies to reduce excess sodium intake, which occurs among 90% of US school-aged children.

OBJECTIVE

To describe major food sources, places obtained, and eating occasions contributing to sodium intake among US school-aged children.

DESIGN

Cross-sectional analysis of data from the 2011-2012 National Health and Nutrition Examination Survey.

PARTICIPANTS/SETTING

A nationally representative sample of 2,142 US children aged 6 to 18 years who completed a 24-hour dietary recall.

MAIN OUTCOME MEASURES

Population proportions of sodium intake from major food categories, places, and eating occasions.

STATISTICAL ANALYSES PERFORMED

Statistical analyses accounted for the complex survey design and sampling. Wald F tests and t tests were used to examine differences between subgroups.

RESULTS

Average daily sodium intake was highest among adolescents aged 14 to 18 years (3,565±120 mg), lowest among girls (2,919±74 mg). Little variation was seen in average intakes or the top five sodium contributors by sociodemographic characteristics or weight status. Ten food categories contributed to almost half (48%) of US school-aged children's sodium intake, and included pizza, Mexican-mixed dishes, sandwiches, breads, cold cuts, soups, savory snacks, cheese, plain milk, and poultry. More than 80 food categories contributed to the other half of children's sodium intake. Foods obtained from stores contributed 58% of sodium intake, fast-food/pizza restaurants contributed 16%, and school cafeterias contributed 10%. Thirty-nine percent of sodium intake was consumed at dinner, 31% at lunch, 16% from snacks, and 14% at breakfast.

CONCLUSIONS

With the exception of plain milk, which naturally contains sodium, the top 10 food categories contributing to US schoolchildren's sodium intake during 2011-2012 comprised foods in which sodium is added during processing or preparation. Sodium is consumed throughout the day from multiple foods and locations, highlighting the importance of sodium reduction across the US food supply.

Hypertension-susceptibility gene prevalence in the Pacific Islands and associations with hypertension in Melanesia

Human essential hypertension is partly caused by genetic factors. Angiotensinogen (AGT), G-protein β3-subunit (GNB3) and cytochrome P450 3A5 (CYP3A5) are candidate hypertension susceptibility genes and risk alleles at these loci have been thought to arise owing to human adaptation to climatic changes following the migration out-of-Africa. This study aimed to reveal the frequencies of hypertension-susceptibility genotypes in Pacific Island populations and associations of these single-nucleotide polymorphisms (SNPs) to hypertension. Genotyping was conducted for 804 individuals from Melanesian, Micronesian and Polynesian populations at SNPs in the genes encoding AGT (rs699, rs5049 and rs5051), GNB3 (rs5443) and CYP3A5*1/*3 (rs776746). Associations between these SNPs and hypertension were tested for 383 Melanesian Solomon Islanders. We found that the A/A genotype at rs5049 was a risk factor for hypertension (P=0.025) in the Melanesian Solomon Islanders; three SNPs for AGT were in linkage disequilibrium. The ancestral alleles of rs699, rs5051 and rs776746, and the derived allele of rs5443 were as frequent in the populations surveyed here as in other equatorial populations. Although other polymorphisms associated with hypertension and additional populations remain to be studied, these findings suggest that the Pacific Islanders' susceptibility to hypertension arose because of human migration and adaptation.