Design and measurement in a study of war exposure, health, and aging: protocol for the Vietnam health and aging study.

BACKGROUND: Survivors of war throughout the world experience illnesses and injuries that are crucial to understand, given the ongoing treatment and adaptation they demand. In developing countries like Vietnam, where population aging and chronic disease burdens are rapidly rising, aging populations have seen a disproportionate share of armed conflict and related casualties. This paper describes the Vietnam Health and Aging Study (VHAS), a unique resource for investigating mechanisms of association between diverse exposures to armed conflict during the Vietnam War and multiple dimensions of older adult health among survivors of that war. METHODS: The VHAS utilizes a longitudinal design, the first wave of data collection conducted in 2018 among 2447 older adults. A second wave of follow-up data collection, scheduled to take place in 2021, will examine life course, social relational and health and mortality transitions. The VHAS was conducted in four northern Vietnamese districts purposively selected to represent a spectrum of war exposure as indicated by intensity of bombings. Additionally, VHAS uses random sampling within gender and military service subdomains to permit unique gender-specific analyses of military service, trauma exposure and health. The VHAS' face-to-face interviews include modules detailing war and military service experiences; warzone stressors; and multiple dimensions of health such as chronic disease, functional limitation, disability, health behaviors, cognition and psychological health. Biomarker data collected for the full VHAS sample includes anthropometric and functional tests such as grip strength and blood pressure, hair samples for cortisol assay, and capillary blood samples to assay C-reactive protein, cholesterol, HbA1c, and other markers of interest for cardiovascular and other disease risks and for testing the impact of early life stressors on later life health. Blood samples will also permit epigenetic analysis of biological aging. DISCUSSION: Future VHAS investigations will examine dynamic linkages between war exposure, mortality and morbidity, while taking into account the selective nature of each of these processes. Longitudinal analyses will examine late-life health transitions and war-related resiliency.

Long-Term Care Needs in the Context of Poverty and Population Aging: the Case of Older Persons in Myanmar.

Myanmar is one of the poorest and least healthy countries in Southeast Asia. As elsewhere in the region, population aging is occurring. Yet the government welfare and health systems have done little to address the long-term care (LTC) needs of the increasing number of older persons thus leaving families to cope on their own. Our study, based on the 2012 Myanmar Aging Survey, documents the LTC needs of persons aged 60 and older and how they are met within the context of the family. Nearly 40% of persons in their early 60s and 90% of those 80 and older reported at least one physical difficulty. Spouses and children constitute the mainstay of the financial and instrumental support of elderly including those with LTC needs. Nearly two-thirds of older persons reported receiving assistance with daily living activities. More than three quarters coreside with children, a living arrangement that in turn is strongly associated with receiving regular assistance in daily living. Daughters represent almost half and spouses, primarily wives, one-fourth of primary caregivers. Unmet need for care as well as inadequate care decline almost linearly with increased household wealth. Thus elderly in the poorest households are most likely to experience gaps in LTC. Given mounting concerns regarding health disparities among Myanmar's population, this pattern of inequality clearly needs to be recognized and addressed. This needs attention now rather than later given that reduced family size and increased migration pose additional challenges for family caregiving of frail elderly in the coming decades.

Military service, exposure to trauma, and health in older adulthood: an analysis of northern Vietnamese survivors of the Vietnam War.

OBJECTIVES: We sought to better understand the association between early life exposure to war and trauma and older adult health status in a developing setting. METHODS: We analyzed data of 405 Vietnamese men and women in 1 northern Vietnam commune who entered early adulthood during the Vietnam War and who are now entering late adulthood (i.e., ages 55 years and older in 2010). RESULTS: The toll of war's trauma in the aging northern Vietnamese population was perceptible in the association between exposure to war trauma and various measures of physical health, including negative self-reported health and somatic symptoms. Killing another person and being exposed to toxic substances in warfare was especially detrimental to health in older adulthood. War traumas were likely implicated more strongly as determinants of late adulthood health in men than in women. The weak association between trauma exposure and reported depressive symptoms raised questions about measuring mental health. CONCLUSIONS: Military service and war trauma were important determinants of older adult health beyond the US context, given the widespread waging of war and concentration of recent armed conflicts within developing societies.

Diverse pathways to permanent childlessness in Singapore: A latent class analysis.

The proportions of adults reaching midlife without having children have been rising rapidly across the globe, particularly in Asia. However, little is known about the pathways to permanent childlessness within the region's childless population. This study utilized latent class analysis (LCA) to typologize pathways to childlessness based on dynamic characteristics of multiple life domains (i.e., partnership, education, and occupation) among 489 childless Singaporeans aged 50 and above from a 2022 nationwide survey. Additionally, we utilized multinomial logistic regressions to examine the sociodemographic correlates of pathway profiles and Shannon's entropy index to assess the heterogeneity in pathways to childlessness among successive cohorts. Results revealed five distinct profiles of pathways to childlessness: the Never-Married Semi-Professionals, the Low-Flex Blue-Collars, the Highly Educated Professionals, the Ever-Married Semi-Professionals, and the Flexible Blue-Collars. These pathway profiles were significantly associated with sociodemographic characteristics such as gender and family background. Women's pathways to childlessness were more standardized and heavily influenced by partnership characteristics, compared to those of men. The childless from privileged family background were less likely to follow pathways characterized by disadvantageous education and occupational status. There were also rising trends of voluntary childlessness among married childless individuals and increasing heterogeneity in pathways to childlessness across successive birth cohorts. In sum, our findings are consistent with some of the predictions of the Second Demographic Transition theory, suggesting that Singapore may be experiencing a demographic transition characterized by rising childlessness, decoupling of marriage and childbearing, and de-standardization of the life course.

Childlessness, Social Network Profiles in Midlife and Late Adulthood, and Their Implications for Subjective Well-Being.

OBJECTIVES: Despite the rising prevalence of individuals reaching advanced age without children, little is known about the diversity of support networks within childless populations. We examine the network profiles of childless adults aged 50+ in Singapore, which observes high childlessness rates despite societal emphasis on familism. METHODS: We employ latent class analysis to derive network typology based on a 2022 nationwide survey in Singapore. Additionally, we use logistic regression analyses to investigate the sociodemographic correlates of childless individuals' network types and the associations between these network types and subjective well-being. RESULTS: Childless Singaporeans form a heterogeneous group characterized by different support networks. Evidence suggests the centrality of parents in the childless' social networks and the continuity of parent-child support exchanges that extend into the child's midlife and late adulthood. When parents are absent, siblings/extended kin serve as their support sources. Age, sibship size, and socioeconomic status are key correlates of network types. Membership in diverse networks is beneficial to the subjective well-being of childless individuals. Although one-fifth of childless individuals in restricted networks demonstrate significantly poorer well-being, the remaining four-fifths show comparable, if not better, well-being than the non-childless. DISCUSSION: Results underscore the importance of differentiating network types among the childless, particularly when assessing their well-being. Contrary to the notion of associating later-life childlessness with social isolation and vulnerabilities, many childless Singaporeans manage to construct non-child-based networks equipped with various supportive relations that cater to their needs. Nevertheless, persistent vulnerabilities among restricted network members deserve policymakers' attention.

Cognitive function following early life war-time stress exposure in a cohort of Vietnamese older adults.

Although Alzheimer's Disease is a leading cause of death in Vietnam and other post-conflict, low- and middle-income countries, aside from studies of veterans in western populations, research on war-related violence and deprivation as risk factors for cognitive disorders remains sparse. Using data from the Vietnam Health and Aging Study, which relied upon a multistage probability sample of 2447 older adults residing in districts of northern Vietnam differentially exposed to wartime bombing and numerous war-related stressors, this paper investigates associations between early-life war-related stressors and later-life cognitive function in a cohort whose transition to adulthood took place during the American-Vietnam War. Relationships among experiences of severe childhood hunger, war-related violence and environmental hardships, military service, and cognitive function in an analytical sample of 2162 Vietnamese older adults are estimated using quantile regression. Cognitive function is assessed by a modified Mini-Mental State Examination (MMSE) score. Analyses also address posttraumatic stress disorder (PTSD), cardiovascular health, and health behaviors as potential mediators between early life war-related stressors and current cognitive function. Results indicate that experiences of severe hunger in childhood and environmental hardships are associated with poorer cognitive function in older adulthood. PTSD, cardiovascular risk (i.e., hypertension) and disease (i.e., stroke), each of which is heightened by exposure to wartime stressors, are associated with lower cognitive scores. Results suggest that certain war exposures, like involvement in combat duties, are associated with higher cognitive function scores, suggesting that military service either positively selects for cognitive function, or certain forms of service may impart cognitive resilience. Following recent calls to incorporate population-specific stressors to advance explanatory models of cognitive function, these findings suggest that it is critical to assess the enduring scars and resilience of armed conflict in global efforts to understand, prevent, and treat cognitive impairment, Alzheimer's Disease, and related dementias.

Respiratory Health Among Older Adults in Vietnam: Does Earlier-Life Military Role and War Exposure Matter?

ObjectiveWe explore how earlier-life military roles and war trauma associate with later-life respiratory health in Vietnam. Method: The population-based sample aged 60+ is from the 2018 Vietnam Health and Aging Study. Poisson and binary logistic regressions investigate correlates of overall lung health, measured as total number of four conditions, and individual conditions, with focus on earlier-life wartime experiences. Results: Exposure is associated with lung conditions. Overall, a one-standard deviation increase in exposure results in 0.529 more conditions (p ≤ .001). Association varies across military roles and is partially explained by PTSD and smoking. Civilians heavily exposed to war trauma exhibit worse lung health than similarly exposed formal and informal military personnel. Discussion: Earlier-life war exposure is an important predictor of late-adulthood respiratory health in lower- and middle-income countries. Evidence calls for attention to the long-term impacts of war on health among not only formal and informal military personnel but also civilians.

Risk Attitudes in Late Adulthood: Do Parenthood Status and Family Size Matter?

How older persons react to high-stakes decisions concerning their finance and healthcare depends a great deal on their orientation towards risk-taking. This study examines the associations between parenthood status, family size, and risk attitudes in late adulthood based on nationally-representative data from the Singapore Life Panel. Multivariate analyses are employed to estimate how older adults' willingness to take risks in the general, financial, and health domains varies by gender and among childless individuals and parents of different family size. Older mothers are found to be less risk tolerant than their childless counterparts across the three risk domains. Conversely, mothers with more children demonstrate greater risk tolerance than mothers with fewer children. We find no evidence that older men's risk attitudes vary by parenthood status and family size. We discuss the implications of our findings for understanding individual and societal well-being in the context of rapid fertility decline and population aging.

Early-Life War Exposure and Later-Life Frailty Among Older Adults in Vietnam: Does War Hasten Aging?

OBJECTIVES: This study aimed to assess the nature and degree of association between exposure to potentially traumatic wartime experiences in early life, such as living in a heavily bombed region or witnessing death firsthand, and later-life frailty. METHOD: The Vietnam Health and Aging Study included war survivors in Vietnam, 60+, who completed a survey and health exam between May and August 2018. Latent class analysis (LCA) is used to construct classes exposed to similar numbers and types of wartime experiences. Frailty is measured using a deficit accumulation approach that proxies biological aging. Fractional logit regression associates latent classes with frailty scores. Coefficients are used to calculate predicted frailty scores and expected age at which specific levels of frailty are reached across wartime exposure classes. RESULTS: LCA yields 9 unique wartime exposure classes, ranging from extreme exposure to nonexposed. Higher frailty is found among those with more heavy/severe exposures with a combination of certain types of experiences, including intense bombing, witnessing death firsthand, having experienced sleep disruptions during wartime, and having feared for one's life during war. The difference in frailty-associated aging between the most and least affected individuals is more than 18 years. DISCUSSION: War trauma hastens aging and warrants greater attention toward long-term implications of war on health among vast postconflict populations across the globe.

The situation and well-being of custodial grandparents in Myanmar: Impacts of adult children's cross-border and internal migration.

Custodial care for grandchildren left behind by migrant parents is an important contribution made by grandparents for their families and societies, given rising migration flows and increasing prominence of skipped-generation households in low- and middle-income countries. Yet, little is known about the scope and consequences of custodial grandparenting in developing settings. Analyzing unique data from the 2017 Myanmar Grandparents Caring for Grandchildren Survey, this study examines the extent to which the middle generation's cross-border and internal migration are associated with caregiving intensity, perception towards grandchild care, and psychological well-being among grandparents. Results suggest limited negative impacts of the middle generation's migration on the situation and well-being of grandparent caregivers. Custodial grandparents, particularly those caring for children of cross-border migrant mothers, experience heightened caregiving responsibilities and perceived difficulties in grandchild care. Nevertheless, all else equal, the middle generation's migration is not significantly associated with grandparents' psychological well-being. Remittances from migrant children and care support from non-coresident family members are found to reduce grandparents' caregiving intensity, improve caregiving perception, and lower psychological distress. In sum, findings echo Myanmar's widespread norms of grandchild care provision by grandparents and underscore mutual interdependence across generations, as evidenced in the importance of remittances from migrant children and informal care support networks in determining the well-being of Myanmar grandparents. This study extends current theoretical perspectives that emphasize custodial grandparenting either as a response to family crises or as a household strategy to facilitate middle-generation migration. Instead, our evidence suggests that, when conceptualizing custodial grandparenting practices in developing settings, it is instructive to consider not only opportunities but also challenges and ambivalent situations associated with the middle generation's diverse migration patterns.

The Impact of Early Life War Exposure on Mental Health among Older Adults in Northern and Central Vietnam.

Most Vietnamese young adults who experienced the American War were exposed to war-related violence, which can exert a lifelong impact. We analyze survey data collected among northern and central Vietnamese older adults in the 2018 Vietnam Health and Aging Study (N = 2,447) to examine the association between various war traumas, psychological distress, and suicidal ideation. Informed by life course and stress process perspectives, we use structural equation models with multiple mediators to analyze the relationship between mental health outcomes and five types of wartime stress exposure: loss of family and friends, witnessing death, malevolent living conditions, life threat, and moral injury. Our findings reveal enduring mental health impacts of war among survivors. Wartime stress exposure's influence on mental health is mediated by recent comorbidities and stressful life events. Loss of family members, witnessing death, and malevolent living conditions during war are particularly salient risks for psychological distress.

Is war hard on the heart? Gender, wartime stress and late life cardiovascular conditions in a population of Vietnamese older adults.

Populations in the global south are disproportionately exposed to the stressors of development, disaster and armed conflict, all of which heighten cardiovascular disease (CVD) risk. We consider how war-related stressors exert a lasting influence upon population health, in particular the cardiovascular health of war survivors now entering older adulthood. Data come from the 2018 Vietnam Health and Aging Study conducted among 2447 northern Vietnamese adults age 60 and older. We conduct survey-adjusted logistic regression analyses to examine the associations among respondents' wartime exposure to combat and physical threat, malevolent environment conditions, and four CVD conditions (hypertension, dyslipidemia, heart disease, and stroke). We examine posttraumatic stress disorder (PTSD) as it mediates the association between wartime stress exposures and late life CVD, and gender as it moderates the relationship between wartime stressors and CVD. We find that exposure to wartime combat and violence, as well as malevolent living conditions, exhibit significant, positive associations with cardiovascular conditions. These associations are mediated by the severity of recent PTSD symptoms. For certain CVD conditions, particularly hypertension, the associations between wartime stressors and late life cardiovascular conditions diverge across gender with women experiencing a greater penalty for their exposure to war-related stressors than their male counterparts. We conclude that the stressors of war and resultant PTSD, widespread in this cohort of Vietnamese older adults who endured myriad forms of war exposure during their young adulthood, exhibit modest, yet significant associations with late-life cardiovascular conditions. Women, especially those exposed to wartime violence and combat, bear this CVD burden alongside men.

Productive aging in developing Southeast Asia: Comparative analyses between Myanmar, Vietnam and Thailand.

Alarmist views regarding the burden that older persons pose for family and society are prevalent; yet, such views are not necessarily warranted. To fill the research gap, this study examines prevalence and differentials in later-life productive engagement in developing Southeast Asia with a focus on the roles of educational attainment and gender. Based on analyses of recent aging surveys in Myanmar, Vietnam and Thailand, we assess three major dimensions of productive engagement among persons aged 60 and above, i.e. their economic activity, assistance to family members, and caregiving. Results suggest that elders in all three countries make important contributions to their families-consistent with Southeast Asia's prevailing norm of reciprocity in intergenerational support. Across the three countries, assistance in household chores is the most common contribution that older persons make, followed by caregiving and economic activity. We find that education is an important factor influencing productive aging. For example, elderly Thais with some educational attainment are more likely than those without any education to participate in the labor force and in turn are able to provide financial assistance to their children. Across the three countries, we find gender differences in later-life productive engagement. While older women tend to provide non-economic contributions to family, older men provide economic contributions more than their female counterparts. Our cross-country comparison additionally indicates that societal contexts such as economic development are likely to have important implications for the extent of productive engagement among older persons with different levels of educational attainment. We discuss policy implications of our empirical findings.

Ethnic differentials in parental health seeking for childhood illness in Vietnam.

Vietnam's sustained investment in primary healthcare since the onset of socialism has lowered infant and childhood mortality rates and improved life expectancy, exceeding progress achieved in other poor countries with comparable levels of income per capita. The recent introduction of user fees for primary healthcare services has generated concern that economic policies may have adversely affected health-seeking behavior and health outcomes of the poor, particularly among impoverished families who are members of socially marginalized minority groups. This paper examines this debate by analyzing parental recall of illness and care-seeking for sick children under the age of 5 years recorded by the 2001-2002 Vietnam National Health Survey. We estimate statistical models of the determinants of parental recall of incidence and response to illness among their children. Ethnic minority parents less frequently reported their children to have been sick than Kinh and Chinese parents. When they recognize an illness episode, minority parents are less likely to seek care -- whether professional consultation or self-prescribed care -- than non-minority parents. Ethnic differentials are evident in all geographic and income levels, although adverse effects of minority status are most pronounced among poor households in remote areas. Regression estimates of the effects of ethnicity and maternal education on health decisions are pronounced even when poverty effects are controlled, suggesting that social equity may have been under-emphasized in Vietnam's early health policy deliberations. Policies extending free healthcare to poor communes affect parental decisions to seek professional care or self-prescribed care among better-off parents without affecting parental decision making among the poor. Early health initiatives for the poor may therefore have failed to offset equity problems confronting impoverished ethnic minority families.

Caring for Thai Older Persons With Long-Term Care Needs.

OBJECTIVE: To provide a situation analysis of recent long-term care (LTC) needs among older persons in Thailand. METHOD: The 2014 Survey of Older Persons in Thailand (SOPT) provides data to assess patterns of caregiving, whether care needs are met, and who are main caregivers for older Thais. We examine how types of familial and nonfamilial caregivers are associated with the well-being of older persons. RESULTS: The need for LTC increases sharply with age and is more common among women than men. Spouses and children constitute approximately 90% of main caregivers. The association of a family member as the main caregiver and education or value of assets is quite weak underscoring the general normative prescription for family members to serve as care providers. DISCUSSION: Thailand is experiencing acute population aging but empirical evidence to support LTC needs remains lacking. This analysis helps close the gap.

Aging in Myanmar.

This spotlight provides an overview of the situation of older persons in Myanmar, an understudied country of over-50-million population. Myanmar is of particular interest to researchers and policy makers, given its overall level of poverty and modestly rapid population aging. Research on older persons, while increasing in recent years, remains sparse. Empirical evidence indicates that Myanmar older persons are in relatively poorer health compared to those in neighboring countries. Many live in abject poverty and depend on their families for material support. Coresidence is very common and facilitates reciprocal exchanges across generations. Looking ahead, Myanmar confronts important challenges including demographic shifts that reduce availability of family support for older persons and increasing burden from chronic illnesses. Currently, government measures are essentially absent, although a law on aging was drafted and is in the process to become legislation.

Physical and Mental Health Consequences of War-related Stressors Among Older Adults: An Analysis of Posttraumatic Stress Disorder and Arthritis in Northern Vietnamese War Survivors.

OBJECTIVES: We examine the impacts of trauma exposures and family stressors associated with the Vietnam War on musculoskeletal health and posttraumatic stress disorder (PTSD) outcomes in elderly Vietnamese who were widely impacted by the war as young adults. Noting that wars' impacts extend beyond male veterans in most survivor populations, we give attention to male and female war survivors placed in a variety of roles vis-a-vis the war. METHOD: Utilizing data from the 2010 Vietnam Health and Aging Pilot Study (N = 405), we use logistic and Poisson regression models to estimate the effect of wartime trauma exposures and family stressors on disabling arthritis and PTSD symptoms in male and female northern Vietnamese adults aged 55 and older. RESULTS: The odds of experiencing recent PTSD symptoms are greater in respondents who report involvement in killing/causing severe injury and who observed war atrocities. In women, PTSD is positively correlated with war era child death and spousal separation. Arthritis also exhibits a significant, positive association with killing/causing severe injury. DISCUSSION: Our study provides insights into the burden of conflict upon health among populations of the global south that survived war and are now entering older adulthood. The pattern of results, indicating greatest suffering among those who inflicted or failed to prevent bodily harm or loss of life, is consistent with the concept of moral injury.

Economic Status and Old-Age Health in Poverty-Stricken Myanmar.

OBJECTIVE: We examine the association between poverty, economic inequality, and health among elderly in Myanmar. METHOD: We analyze 2012 data from Myanmar's first representative survey of older adults to investigate how health indicators vary across wealth quintiles as measured by household possessions and housing quality. RESULTS: Poverty and poor health are pervasive. Self-assessed health, sensory impairment, and functional limitation consistently improve with higher wealth levels regardless of socio-demographic controls. Differentials in self-rated health and sensory impairment between the bottom and second quintiles are clearly evident, suggesting that relative economic inequality matters even among very poor elders and that a small difference in wealth can matter in an extreme poverty setting. DISCUSSION: Findings support a global theory of economic gradients in health regardless of level of societal poverty. Modest efforts to improve the standard of living among elderly may improve not only their material well-being but also their health.

Living Arrangements and Psychological Well-Being of the Older Adults After the Economic Transition in Vietnam.

OBJECTIVES: We examine the relationship between living arrangements and psychological well-being of the older adults in Vietnam, where there is an influence of Confucian values and a lack of close substitutes for family care of the older adults, by exploiting a great deal of regional variation in economic development. We also examine the role of living arrangements in well-being differentials across regions. METHOD: We estimate a triangular simultaneous-equation discrete-response model, which accounts for the simultaneity between living arrangements and psychological well-being (happiness, depression, loneliness, poor appetite, and sleep disorder), using a nationally representative sample of 2,225 adults aged 60 and older drawn from the 2011 Vietnam Aging Survey. RESULTS: Intergenerational coresidence significantly increases the psychological well-being of the older adults in Vietnam. The results are fairly robust, even after taking quasi-coresidence into account, decomposing the psychological well-being index into each affect and symptom, and splitting the sample by gender. DISCUSSION: Changes in living arrangements induced by differences in labor market opportunities in neighboring regions have resulted in significant differences in psychological well-being among the older adults. The findings point to the need for attention to the mental health of elderly parents left behind in less economically developed regions.

How do living arrangements and intergenerational support matter for psychological health of elderly parents? Evidence from Myanmar, Vietnam, and Thailand.

Living arrangements and family support for older persons have become an increasingly important policy concern in developing and rapidly aging Asia. Formulating a sound elderly care policy for the region will benefit from empirically examining how living arrangements, particularly coresidence, and intergenerational exchanges of financial, instrumental, and emotional support are associated with old-age psychological health. This study analyzes data from nationally representative aging surveys in Myanmar, Vietnam, and Thailand for 2011-2012 to offer a comparative perspective from Southeast Asia where various kinship systems coexist. Results suggest that coresidence with a child of culturally preferred gender significantly improves the emotional health of Vietnamese and Thai elders but with different implications. In Vietnam, living with a married son is more beneficial to parents' psychological wellbeing than living with other children. In Thailand, coresidence regardless of the child's gender improves old-age psychological wellbeing but living with a daughter brings greater benefits than living only with son. Evidence points to the importance of understanding the dominant kinship system that may shape normative filial expectations and gender role expectations within the family. In Vietnam and Thailand, the positive association holds even after intergenerational support is controlled, suggesting that the value of culturally preferred coresidence goes beyond practical functions. In Myanmar, there are almost no significant differences in psychological wellbeing among elderly across various living arrangements, except between coresidence and network living arrangements. For all settings, we do not find evidence in support of network family arrangements as a complete substitute for coresidence in terms of promoting old-age psychological wellbeing after filial support is controlled. Our study highlights important cultural nuances for theorizing the nature of the relationship between living arrangements and old-age psychological health, and presents the important need for more rigorous investigation of the causal links between these two phenomena in future research.