Perceived racial discrimination and mental distress in older Korean Americans: the moderating role of ethnic resources.

OBJECTIVES: To examine associations among perceived racial discrimination, ethnic resources, and mental distress in older Korean Americans. Ethnic resources included ethnic identity (how closely individuals identify themselves with other members of the same ethnic background) and sense of community (individuals' feelings of belonging to their ethnic group). We examined the direct effect of perceived racial discrimination and these ethnic resources, as well as their interactions, hypothesizing that mental distress associated with perceived racial discrimination would be reduced by ethnic resources. DESIGN: Using survey data from the Study of Older Korean Americans (N = 2,150), linear regression models of mental distress were examined for direct and interactive roles of perceived racial discrimination and ethnic resources. RESULTS: Mental distress was directly associated with perceived racial discrimination (B = 1.90, SE = .20, p < .001), ethnic identity (B = -.41, SE = .13, p < .01), and sense of community (B = -.45, SE = .12, p < .001). Perceived racial discrimination interacted significantly with sense of community (B = -1.86, SE = .28, p < .001). Subgroup analyses suggested that in the context of experiencing racial discrimination, a high sense of community can serve as a buffer against mental distress. CONCLUSIONS: Ethnic resources are a benefit in coping with experiences of discrimination. The moderating role of sense of community suggests the value of fostering social capital in ethnic communities to protect and promote older immigrants' mental health.

Perceived Racial Discrimination and Mental Health in Diverse Groups of Asian Americans: The Differing Impacts by Age, Education, and Ethnicity.

The aim of this study was to examine how perceived racial discrimination is associated with mental distress among diverse Asian Americans and to explore the potential moderators in the relationship. Based on the 2015 Asian American Quality of Life (AAQoL) survey (n = 2609), direct influences were tested of the contextual (demographic, health-related, and immigration-related) variables and perceived racial discrimination on mental distress, as well as their interactions. About 30% of the sample reported perceived racial discrimination, and 44% fell into the category of having mental distress. Perceived racial discrimination was associated with 1.90 times higher odds of mental distress and had significant interactions with age, education, and ethnicity. The association of mental distress with perceived racial discrimination was higher among those who were 60 or older, less educated, and Vietnamese than among their respective counterparts. Findings can guide strategic and targeted interventions for high-risk groups.

Social isolation in Asian Americans: risks associated with socio-demographic, health, and immigration factors.

OBJECTIVES: The present study examined the factors associated with social isolation in Asian Americans. Three types of social isolation (social isolation from family, social isolation from friends, and overall social isolation), identified by the Lubben Social Network Scale-6, were examined with a sample of Asian Americans representing diverse ethnic groups (Chinese, Asian Indian, Korean, Vietnamese, Filipino, and other Asians) and a broad age range (18-98). DESIGN: Using data from the 2015 Asian American Quality of Life Survey (N = 2609), logistic regression models examined how each type of social isolation was predicted by sociodemographic (age, gender, ethnic origin, marital status, education, and perceived financial status), health-related (chronic medical conditions and self-rated health), and immigration-related (proportion of life in the United States and English proficiency) variables. RESULTS: The percentage of the sample that fell into the category of social isolation from family, social isolation from friends, and overall isolation ranged from 18.2% to 19.3%. At 36% in the friend category and 33% in the overall category, the Vietnamese sample showed a heightened risk of social isolation. Regression analyses indicated that, for both family and friend categories, individuals who were in the middle-aged group (40-59 years old) and who had limited English proficiency demonstrated higher odds of being isolated. Reflecting relational differences in family and friend networks, the risk associated with unmarried status was specific to social isolation from family, whereas having unmet financial needs was only associated with social isolation from friends. CONCLUSIONS: The study findings expand our understanding of the multiple domains of social isolation in an understudied population and emphasize the importance of developing prevention and intervention programs to foster social connectedness among Asian Americans. Our findings on risk factors and ethnic variations help identify the groups to be prioritized in intervention efforts and suggest ways to approach them.

College students' underlying perceptions of COVID-19 threat, healthcare discrimination, and healthcare system inequities associated with self-rated health across racial/ethnic groups in the U.S.

Background: COVID-19-related health perceptions may differentially impact college students' stress, and in turn, their mental and physical health. This study examined racial/ethnic differences in college students' underlying perceptions of COVID-19 threat, healthcare discrimination, and U.S. healthcare system inequities and their associations with self-rated mental and physical health. Methods: Four-hundred-thirty-two university students completed an online survey (December 2020-December 2021). Latent class analyses identified classes of perceived COVID-19 threat (i.e., severity, susceptibility), healthcare discrimination, and U.S. healthcare system inequities. Regression analyses examined whether class membership varied by race/ethnicity and was associated with self-rated mental and physical health. Results: Class 1 members (27.3% of the sample) were more likely to identify as Hispanic or Latino, Non-Hispanic Asian, Non-Hispanic Black or African American, and Non-Hispanic Multiracial vs. Non-Hispanic White (vs. Class 4). Class 1 had high perceived COVID-19 threat, medium perceived healthcare discrimination, and high perceived U.S. healthcare system inequities, as well as higher odds of poorer mental and physical health (vs. Class 4). Conclusions: College students' underlying perceptions of COVID-19 threat, healthcare discrimination, and U.S. healthcare system inequities were associated with poorer health. Given that students with these perceptions were more likely to belong to minoritized racial/ethnic groups, concerns over COVID-19 risk and healthcare may partially explain racial/ethnic disparities in college students' health. This study contributes to a limited body of evidence on college students' perceptions of the U.S. healthcare system and suggests important ways that structural inequalities and racial/ethnic disparities in COVID-19 risk, healthcare discrimination, and concerns over U.S. healthcare system inequity may affect college students' health.

Perceived discrimination, psychosocial resources, and mental distress in Vietnamese Americans.

This study examines how the mental health of Vietnamese Americans is influenced by a life stressor (perceived discrimination) and psychosocial resources (social network, religiosity, and acculturation). Data came from 513 Vietnamese Americans who were subsample of the Asian American Quality of Life (AAQoL) survey (total N = 2,614). The AAQoL survey was conducted with self-identified Asian Americans aged 18 or older in Central Texas in 2015. More than 32% of the Vietnamese sample reported perceived discrimination. A higher level of mental distress was associated with younger age, unmarried status, unmet financial status, poorer ratings of health, fewer years of stay in the U.S., perceived discrimination, smaller social network, and lower levels of acculturation and religiosity. In a multivariate analysis, the experience of discrimination (ß = 0.16, p < .01), smaller social network (ß = -.10, p < .05), and lower acculturation (ß = -.17, p < .05) were found to be significant predictors to mental distress. No significant interaction was found. These identified risks and resources should be addressed in developing and implementing culturally sensitive mental health interventions targeted to Vietnamese American communities.

The role of self-rated mental health in seeking professional mental health services among older Korean immigrants.

OBJECTIVES: The gap between mental health needs and service use in racial/ethnic minorities continues to be a major public health concern. Focusing on older Korean immigrants, the present study examined linkages among mental distress, self-rated mental health (SRMH), and the use of professional mental health services. We hypothesized that SRMH would play a mediating role in the relationship between mental distress and the use of professional mental health services. METHOD: Using data from the Study of Older Korean Americans (SOKA; N = 2,150, Mean age = 73.4), the direct and indirect effect models were tested. RESULTS: Nearly 30% of the sample fell within the category of experiencing mental distress, but only a small proportion (5.7%) had used professional mental health services. Supporting our hypothesis, the pathway from mental distress to the use of professional mental health services was influenced by an individual's subjective perception of mental health status: the indirect effect of mental distress on service use through SRMH (.04 [.01]) was significant (bias-corrected 95% confidence interval for the indirect effect = .02, .06). CONCLUSION: The findings of this study not only contribute to our understanding of help-seeking processes in a group at high mental health risk but also suggest avenues to promote their use of mental health services.

Perceived discrimination and depressive symptoms: a study of Vietnamese women who migrated to South Korea due to marriage.

International migrants are one group that is vulnerable to discrimination and mental health problems. This study examined the experience of perceived discrimination and its impact on depressive symptoms among women who migrated in the specific context of marriage. Using social constructionism and the stress appraisal model, this study conceptualized perceived discrimination as a potential source of stress and hypothesized that it would negatively impact the mental health of migrant women. A survey sample of 212 Vietnamese marriage migrant women in South Korea was used for the final analysis. Perceived discrimination was measured using the adapted Everyday Discrimination Scale (EDS). Overall, approximately 62% of the sample reported having at least one discriminatory encounter based on the nine items of the EDS. The results of the multivariate analyses indicated that perceived discrimination posed a significant risk to mental health (ß = 0.43, p < .001). The experience of perceived discrimination increased the amount of explained variance of depressive symptoms by 17%. Findings highlighted the adverse mental health consequences of daily unfair treatment and disrespect in interpersonal contexts and the importance of social policies and programs that promote respect for cultural diversity.

Stigmatizing Beliefs About Depression in Diverse Ethnic Groups of Asian Americans.

Focusing on diverse ethnic groups of Asian Americans, the present study examined the prevalence, ethnic variations, and predictors of stigmatizing beliefs about depression (beliefs that associate depression with a sign of weakness, shame to the whole family, and family disappointment, and beliefs that antidepressant medicines are addictive). Data were drawn from 2609 participants (age range 18-98) in the 2015 Asian American Quality of Life survey that includes Chinese, Asian Indian, Korean, Vietnamese, Filipinos, and other Asians. Results of a series of logistic models indicated that age, gender, ethnicity, length of stay in the U.S., English proficiency, and acculturation were significantly associated with stigmatizing beliefs about depression. Ethnic variations in beliefs were also observed. Implications for research and practice are discussed.

Willingness to Use a Nursing Home in Asian Americans.

This study explores factors associated with willingness to use a nursing home in Asian Americans. Focus is given to demographic variables (age, gender, ethnicity, marital status, and education), health-related variables (chronic medical condition and self-rated health), immigration-related variables (time in the U.S. and acculturation), and family-related variables (family network and family solidarity). Cross-sectional study. Data were drawn from 2551 participants in the 2015 Asian American Quality of Life Survey (aged 18-98). Participants were asked to indicate whether they would be willing to use a nursing home in the future. An affirmative response indicated a personal willingness to use a nursing home. Approximately 38% of the sample demonstrated willingness to use a nursing home. Higher odds for willingness were observed among those with advanced age, female gender, Korean ethnicity (compared with Chinese), better education, presence of a chronic medical condition, longer years of residence in the U.S., and lower levels of family solidarity. Reflecting the current trend of an increase in racial/ethnic minorities in nursing homes, a substantial proportion of the present sample of Asian Americans demonstrated willingness to use a nursing home. Findings on the factors associated with willingness provide implications for policies and services to respond to the long-term care needs of this emerging population.

Acculturation, Acculturative Stress, and Depressive Symptoms in International Migrants: A Study with Vietnamese Women in South Korea.

Globally, there have been increasing numbers of migrant women; these women are at an increased risk for depressive symptoms. The purpose of this study was to examine the associations among acculturation, acculturative stress and depressive symptoms in Vietnamese women who migrated to South Korea through marriages. We hypothesized that acculturative stress would serve as a mediator in the relationship between acculturation and depressive symptoms. Our findings from surveys with 217 Vietnamese immigrant women showed that the indirect effect of acculturation on depressive symptoms, mediated through acculturative stress [- .15 (.04)], was significant (bias corrected 95% confidence interval for the indirect effect = - .25, - .08). Low levels of acculturation increased acculturative stress, which in turn led to the elevated symptoms of depression. Our findings not only illuminate the adaptation processes of international, female migrants but also suggest avenues to protect and promote their mental well-being.

An Angiotensin I converting enzyme polymorphism is associated with clinical phenotype when using differentiation-syndrome to categorize korean bronchial asthma patients.

In this study, genetic analysis was conducted to investigate the association of angiotensin I converting enzyme (ACE) gene polymorphism with clinical phenotype based on differentiation-syndrome of bronchial asthma patients. Differentiation-syndrome is a traditional Korean medicine (TKM) theory in which patients are classified into a Deficiency Syndrome Group (DSG) and an Excess Syndrome Group (ESG) according to their symptomatic classification. For this study, 110 participants were evaluated by pulmonary function test. Among them, 39 patients were excluded because they refused genotyping. Of the remaining patients, 52 with DSG of asthma (DSGA) and 29 with ESG of asthma (ESGA), as determined by the differentiation-syndrome techniques were assessed by genetic analysis. ACE insertion/deletion (I/D) polymorphism analysis was conducted using polymerase chain reaction (PCR). Student's t, chi-square, Fisher and Hardy-Weinberg equilibrium tests were used to compare groups. No significant differences in pulmonary function were observed between DSGA and ESGA. The genotypic frequency of ACE I/D polymorphism was found to differ slightly between DSGA and ESGA (P = .0495). However, there were no significant differences in allelic frequency observed between DSGA and ESGA (P = .7006, OR = 1.1223). Interestingly, the allelic (P = .0043, OR = 3.4545) and genotypic (P = .0126) frequencies of the ACE I/D polymorphism in female patients differed significantly between DSGA and ESGA. Taken together, the results presented here indicate that the symptomatic classification of DSGA and ESGA by differentiation-syndrome in Korean asthma patients could be useful in evaluation of the pathogenesis of bronchial asthma.

Effects of electrochemical reduction reactions on the biodegradation of recalcitrant organic compounds (ROCs) and bacterial community diversity.

Five bacterial species, capable of degrading the recalcitrant organic compounds (ROCs) diethyleneglycol monomethylether (DGMME), 1-amino-2-propanol (APOL), 1-methyl-2- pyrrolidinone (NMP), diethyleneglycol monoethylether (DGMEE), tetraethyleneglycol (TEG), and tetrahydrothiophene 1,1-dioxide (sulfolane), were isolated from an enrichment culture. Cupriavidus sp. catabolized 93.5+/-1.7 mg/l of TEG, 99.3+/-1.2 mg/l of DGMME, 96.1+/-1.6mg/l of APOL, and 99.5+/-0.5mg/l of NMP in 3 days. Acineobacter sp. catabolized 100 mg/l of DGMME, 99.9+/-0.1 mg/l of NMP, and 100 mg/l of DGMEE in 3 days. Pseudomonas sp.3 catabolized 95.7+/-1.2 mg/l of APOL and 99.8+/-0.3 mg/l of NMP. Paracoccus sp. catabolized 98.3+/-0.6 mg/l of DGMME and 98.3+/-1.0 mg/l of DGMEE in 3 days. A maximum 43+/-2.0 mg/l of sulfolane was catabolized by Paracoccus sp. in 3 days. When a mixed culture composed of the five bacterial species was applied to real wastewater containing DGMME, APOL, NMP, DGMEE, or TEG, 92~99% of each individual ROC was catabolized within 3 days. However, at least 9 days were required for the complete mineralization of sulfolane. Bacterial community diversity, analyzed on the basis of the TGGE pattern of 16S rDNA extracted from viable cells, was found to be significantly reduced in a conventional bioreactor after 6 days of incubation. However, biodiversity was maintained after 12 days of incubation in an electrochemical bioreactor. In conclusion, the electrochemical reduction reaction enhanced the diversity of the bacterial community and actively catabolized sulfolane.