Social capital, the miniaturisation of community, traditionalism and first time acute myocardial infarction: a prospective cohort study in southern Sweden

This longitudinal study investigates the impact of social participation, trust and the combinations of social participation and trust on the incidence of first time acute myocardial infarction (AMI) in the population of Scania, southern Sweden. It is based on the cross-sectional 2000 public-health survey in Scania with a 59% participation rate and 13,604 participants, and prospective morbidity/mortality data collected for three years (January 2000-December 2002). The study cohort was followed prospectively to examine first ever AMI. Hazard rate ratios (HRR) for first time AMI in the social participation, trust and social participation/trust combinations were calculated in a Cox regression model with adjustments for age, sex, education, economic stress, daily smoking, leisure time physical activity, body mass index (BMI), and self-reported health. The prevalence of low social participation was 32.8% among men and 31.5% among women. The prevalence of low trust was 40.0% among men and 44.2% among women. The three-year first time AMI rate was significantly higher among people with higher age, low education, daily smoking, poor self-reported health (among men), low social participation, and the combinations of low social participation/high trust and low social participation/low trust. The results show that low social participation but not trust was significantly associated with first time AMI after adjustment for age and sex. The positive association between low social participation and myocardial infarction remained significant after further adjustments for education, economic stress, daily smoking, physical activity and BMI, and became not significant only after additional adjustment for self-reported health, HRR 1.3 (0.9-2.0). High trust in combination with low social participation as well as low social capital (low trust/low social participation) were significantly associated with AMI, but after multiple adjustments only the low social participation/high trust category remained significant, HRR 1.6 (1.0-2.6).     

Social capital and inequality in health between single and couple parents in Sweden

AIMS: To study whether social capital is associated with health among parents and if so, whether existing inequalities in health between single and couple parents could be better understood by introducing social capital as a possible mechanism for how health is distributed. MATERIAL AND METHODS: At total of 2,500 parents with children in the age range of 4-16 years were randomized from existing national registers and asked to participate in a nationally distributed postal questionnaire; 1,589 parents participated (277 single and 1,312 couple), giving a response rate of 64%. The questionnaire contained questions regarding sociodemographic and socioeconomic characteristics, self-rated health, emotional and instrumental social support, civic and social participation, and trust. Social capital was measured by different levels of civic and social participation and trust. A multivariate analysis was used in order to find possible associations between social capital and health, when adjusted for social support, sociodemographic and socioeconomic characteristics. RESULTS: A low level of social capital (both social participation and trust), when adjusted for social support, socioeconomic and sociodemographic variables, was clearly and positively associated with less than good self-rated health. Social capital was unevenly distributed between single and couple mothers. CONCLUSIONS: Social capital is positively associated with self-rated health, at an individual level. The uneven distribution of social capital between single and couple mothers may be of some importance when trying to further understand and possibly alter the inequality in health that exists between single and couple parents.     

Individual social capital, neighbourhood deprivation, and self-rated health in England

Individual social capital is increasingly considered to be an important determinant of an individual's health. This study examines the extent to which individual social capital is associated with self-rated health and the extent to which individual social capital mediates t.he relationship between neighbourhood deprivation and self-rated health in an English sample. Individual social capital was conceptualized and operationalized in both the social cohesion- and network resource tradition, using measures of generalized trust, social participation and social network resources. Network resources were measured with the position generator. Multilevel analyses were applied to wave 2 and 3 of the Taking Part Surveys of England, which consist of face-to-face interviews among the adult population in England (N(i) = 25,366 respondents, N(j) = 12,388 neighbourhoods). The results indicate that generalized trust, participation with friends and relatives and having network members from the salariat class are positively associated with self-rated health. Having network members from the working class is, however, negatively related to self-rated health. Moreover, these social capital elements are partly mediating the negative relationship between neighbourhood deprivation and self-rated health.     

Social capital and self-rated health in Colombia: the good, the bad and the ugly

Although there is increasing evidence supporting the associations between social capital and health, less is known of potential effects in Latin American countries. Our objective was to examine associations of different components of social capital with self-rated health in Colombia. The study had a cross-sectional design, using data of a survey applied to a nationally representative sample of 3025 respondents, conducted in 2004-2005. Stratified random sampling was performed, based on town size, urban/rural origin, age, and sex. Examined indicators of social capital were interpersonal trust, reciprocity, associational membership, non-electoral political participation, civic activities and volunteering. Principal components analysis including different indicators of social capital distinguished three components: structural-formal (associational membership and non-electoral political participation), structural-informal (civic activities and volunteering) and cognitive (interpersonal trust and reciprocity). Multilevel analyses showed no significant variations of self-rated health at the regional level. After adjusting for sociodemographic covariates, interpersonal trust was statistically significantly associated with lower odds of poor/fair health, as well as the cognitive social capital component. Members of farmers/agricultural or gender-related groups had higher odds of poor/fair health, respectively. Excluding these groups, however, associational membership was associated with lower odds of poor/fair health. Likewise, in Colombians with educational attainment higher than high school, reciprocity was associated with lower odds of fair/poor health. Nevertheless, among rural respondents non-electoral political participation was associated with worse health. In conclusion, cognitive social capital and associational membership were related to better health, and could represent important notions for health promotion. Human rights violations related to political violence and gender based discrimination may explain adverse associations with health.     

Contextual social capital as a risk factor for poor self-rated health: a multilevel analysis

In this study, we critically examine whether contextual social capital (CSC) is associated with self-rated health, with an emphasis on the problem of confounding. We also examine different components of CSC and their association with self-rated health. Finally, we look at differences in susceptibility between different socio-demographic groups. We use the cross-sectional base line study of the Stockholm Public Health Cohort, conducted in 2002. A postal questionnaire was answered by 31,182 randomly selected citizens, 18-84 years old, in Stockholm County. We used four measures of social capital: horizontal (civic trust and participation), vertical (political trust and participation), cognitive (civic and political trust) and structural (civic and political participation). CSC was measured at parish level from aggregated individual data, and multilevel regression procedures were employed. We show a twofold greater risk of poor self-rated health in areas with very low CSC compared with areas with very high CSC. Adjustments for individual socio-demographic factors, contextual economic factors and individual social capital lowered the excess risk. Simultaneous adjustment for all three forms of confounding further weakened the association and rendered it insignificant. Cognitive and structural social capital show relatively similar associations with self-rated health, while horizontal CSC seems to be more strongly related to self-rated health than vertical CSC. In conclusion, whether there is none or a moderate association between CSC and self-rated health, depends on the extent to which individual social capital is seen as a mediator or confounder. The association with self-rated health is similar independent of the measure of CSC used. It is also similar in different socio-demographic groups.     

Social capital, the miniaturisation of community and self-reported global and psychological health

Social capital is often operationalised as social participation in the activities of the formal and informal networks of civil society and/or as generalised trust. Social participation and trust are two aspects of social capital that mutually affect each other, according to the literature. In recent years there has been an increased attention to the fact that generalised trust decreases for every new birth cohort that reaches adulthood in the USA, while social participation may take new forms such as ideologically much narrower single-issue movements that do not enhance trust. The phenomenon has been called "the miniaturisation of community". The effects of similar patterns in Sweden on self-reported health and self-reported psychological health are analysed. The odds ratios of bad self-reported global health are highest in the low-social capital category (low-social participation/low trust), but the miniaturisation of community and low-social participation/high-trust categories also have significantly higher odds ratios than the high-social capital category (high-social participation/high trust). The odds ratios of bad self-reported psychological health are significantly higher in both the low-social capital category and the miniaturisation of community category compared to the high-social capital category, while the low-social participation/high-trust category does not differ from the high-social capital reference group.     

Social capital, trust in the health-care system and self-rated health: the role of access to health care in a population-based study

This paper investigates the relationship between institutional trust in the health-care system, i.e. an institutional aspect of social capital, and self-rated health, and whether the strength of this association is affected by access to health-care services. The 2004 public health survey in the Scania region of Sweden is a cross-sectional study; a total of 27,963 respondents aged 18-80 years answered a postal questionnaire, which represents 59% of the random sample. Logistic regression model was used to investigate the association between institutional trust and self-rated health. Multivariate analyses of self-rated health were performed in order to investigate the importance of possible confounders (age, country of origin, education, economic stress, generalized trust in other people, and care-seeking behaviour) on this association. A 28.7% proportion of the men and 33.2% of the women reported poor self-rated health. A total of 15.0% and 58.3% of the respondents reported "very high" and "rather high" trust in the health-care system, respectively. Almost one-third of all respondents reported low institutional trust. Respondents born outside Sweden, with low/medium education, low generalized trust and low institutional trust had significantly higher odds ratios of poor self-rated health. Multiple adjustments for age, country of origin, education, economic stress, and horizontal trust had some effect on the significant relationship between institutional trust and poor self-rated health, for both men and women, but the additional introduction of care-seeking behaviour in the model substantially reduced the odds ratios. In conclusion, low trust in the health-care system is associated with poor self-rated health. This association may be partly mediated by "not seeking health care when needed". However, this is a cross-sectional exploratory study and the causality may go in both directions.     

A multilevel analysis of social capital and self-rated health: Evidence from the British Household Panel Survey

Social capital is often described as a collective benefit engendered by generalised trust, civic participation, and mutual reciprocity. This feature of communities has been shown to associate with an assortment of health outcomes at several levels of analysis. The current study assesses the evidence for an association between area-level social capital and individual-level subjective health. Respondents participating in waves 8 (1998) and 9 (1999) of the British Household Panel Survey were identified and followed-up 5 years later in wave 13 (2003). Area social capital was measured by two aggregated survey items: social trust and civic participation. Multilevel logistic regression models were fitted to examine the association between area social capital indicators and individual poor self-rated health. Evidence for a protective association with current self-rated health was found for area social trust after controlling for individual characteristics, baseline self-rated health and individual social trust. There was no evidence for an association between area civic participation and self-rated health after adjustment. The findings of this study expand the literature on social capital and health through the use of longitudinal data and multilevel modelling techniques.     

Does area-based social capital matter for the health of Australians? A multilevel analysis of self-rated health in Tasmania

BACKGROUND: Material circumstances and collective psychosocial processes have been invoked as potential explanations for socioeconomic inequalities in health; and, linking social capital has been proposed as a way of reconciling these apparently opposing explanations. METHODS: We conducted multilevel logistic regression of self-rated health (fair or poor vs excellent, very good, or good) on 14 495 individuals living within 41 statistical local areas who were respondents to the 1998 Tasmanian Healthy Communities Study. We modelled the effects of area-level socioeconomic disadvantage and social capital (neighbourhood integration, neighbourhood alienation, neighbourhood safety, social trust, trust in public/private institutions, and political participation), and adjusted for the effects of individual characteristics. RESULTS: Area-level socioeconomic disadvantage was associated with poor self-rated health (beta = 0.0937, P < 0.001) an effect that was attenuated, but remained significant, after adjusting for individual characteristics (beta = 0.0419, P < 0.001). Social trust was associated with a reduction in poor self-rated health (beta = -0.0501, p = 0.008) and remained significant when individual characteristics (beta = -0.0398, P = 0.005) were included. Political participation was non-significant in the unadjusted model but became significant when adjusted for individual characteristics (beta = -0.2557, P = 0.045). The effects of social trust and political participation were attenuated and became non-significant when area-level socioeconomic disadvantage was included. CONCLUSION: Area-based socioeconomic disadvantage is a determinant of self-rated health in Tasmania, but we did not find an independent effect of area-level social capital. These findings suggest that in Tasmania investments in improving the material circumstances in which people live are likely to lead to greater improvements in population health than attempts to increase area-level social capital.     

Social determinants of health – A question of social or economic capital? Interaction effects of socioeconomic factors on health outcomes

Social structures and socioeconomic patterns are the major determinants of population health. However, very few previous studies have simultaneously analysed the "social" and the "economic" indicators when addressing social determinants of health. We focus on the relevance of economic and social capital as health determinants by analysing various indicators. The aim of this paper was to analyse independent associations, and interactions, of lack of economic capital (economic hardships) and social capital (social participation, interpersonal and political/institutional trust) on various health outcomes. Data was derived from the 2009 Swedish National Survey of Public Health, based on a randomly selected representative sample of 23,153 men and 28,261 women aged 16-84 year, with a participation rate of 53.8%. Economic hardships were measured by a combined economic hardships measure including low household income, inability to meet expenses and lacking cash reserves. Social capital was measured by social participation, interpersonal (horizontal) trust and political (vertical/institutional trust) trust in parliament. Health outcomes included; (i) self-rated health, (i) psychological distress (GHQ-12) and (iii) musculoskeletal disorders. Results from multivariate logistic regression show that both measures of economic capital and low social capital were significantly associated with poor health status, with only a few exceptions. Significant interactive effects measured as synergy index were observed between economic hardships and all various types of social capital. The synergy indices ranged from 1.4 to 2.3. The present study adds to the evidence that both economic hardships and social capital contribute to a range of different health outcomes. Furthermore, when combined they potentiate the risk of poor health.     

Marital status,social capital,material conditions and self-rated health: A population-based study

AimsAssociations between marital status and self-rated health were investigated, adjusting for material conditions and trust (social capital).MethodsThe 2004 public-health survey in Skåne is a cross-sectional study. A total of 27,757 persons aged 18–80 years answered a postal questionnaire, which represents 59% of the random sample. A logistic regression model was used to investigate associations between marital status and self-rated health, adjusting for economic problems and trust.ResultsThe prevalence of poor self-rated health was 28.7% among men and 33.2% among women. Older respondents, respondents born abroad, with medium/low education, low emotional support, low instrumental support, economic problems, low trust, never married and divorced had significantly higher odds ratios of poor self-rated health than their respective reference group. Low trust was significantly higher among the divorced and unmarried compared to the married/cohabitating. Adjustment for economic problems but not for trust reduced the odds ratios of poor self-rated health among the divorced, which became not significant among men.ConclusionsNever married and the divorced have significantly higher age-adjusted odds ratios of poor self-rated health than the married/cohabitating group. Economic problems but not trust seem to affect the association between marital status and poor self-rated health.     

Social capital, the miniaturization of community and high alcohol consumption: a population-based study

AIMS: To study the impact of social participation, trust, and the miniaturization of community, i.e. high social participation/low trust, on the risk of high alcohol consumption. METHODS: The Scania 2000 public health survey is a cross-sectional, postal questionnaire study. A total of 13 604 persons aged 18-80 years were included. A logistic regression model was used to investigate the association between the social capital variables and high alcohol consumption (168.0 g/week or more for men and 108.0 g/week or more for women). The multivariate analyses analysed the importance of confounders (age, country of origin, education, and economic stress) on the risk of high alcohol consumption according to the social capital variables. RESULTS: A 14.0% proportion of all men and 7.8% of all women had an alcohol consumption above recommended levels. High alcohol consumption above recommended levels was not associated with social participation but negatively associated with trust among men. The miniaturization of community category, i.e. high social participation/low trust, had significantly higher risks of high alcohol consumption compared to the high social capital (high social participation/high trust) category among men. CONCLUSION: High social participation combined with low trust, i.e. the miniaturization of community, is positively associated high alcohol consumption among men. A structural/social factor which may affect the amount of alcohol consumed has thus been identified in this study.     

Social capital dynamics and health in mid to later life: findings from Australia

Purpose

The influence of social capital has been shown to improve health and wellbeing. This study investigates the relationship between changes in social capital and health outcomes during a 6-year follow-up in mid to later life in Australia.

Methods

Nationally representative data from the Household, Income and Labour Dynamics in Australia (HILDA) survey included participants aged 45 years and over who responded in 2006, 2010 and 2012 (N = 3606). Each of the three components of social capital (connectedness, trust and participation) was measured in Waves 2006 and 2010 and categorised as: ‘never low’, ‘transitioned to low’, ‘transitioned out of low’ and ‘consistently low’. Health outcomes in 2012 included self-rated overall health, physical functioning, and mental health based on the Short Form 36-item health survey (SF-36). Multivariable logistic regression assessed changes in social capital (measured in 2006 and 2010) predicted poor health (measured in 2012), adjusting for covariates.

Results

Consistently low trust was significantly associated with higher odds of transitions into poor physical functioning (AOR 1.54; 95% Confidence Interval 1.06–1.22), poor mental health (AOR 1.59; 95% CI 1.08–2.36) and poor self-rated health (AOR 1.86; 95% CI 1.27–2.72). Transition into low trust was also a predictor of poor self-rated health after adjusting for covariates (AOR 1.74; 95% CI 1.11–2.73). Changes in social connectedness in both directions (transitioned out of and into low) were statistically associated with poor self-rated health (AORs 1.40; 95% CI 1.00–1.97 and 1.61; 95% CI 1.11–2.34, respectively) after adjusting for confounders as well as other social capital components.

Conclusions

Our longitudinal findings reveal social capital dynamics and effects on health in mid to later life. Social trust and connectedness could be important enablers for older persons to be more active in the community and potentially benefit their health and wellbeing over time.

     

The importance of gender and conceptualization for understanding the association between collective social capital and health: a multilevel analysis from northern Sweden

Growing research on social capital and health has fuelled the debate on whether there is a place effect on health. A central question is whether health inequality between places is due to differences in the composition of people living in these places (compositional effect) or differences in the local social and physical environments (contextual effects). Despite extensive use of multilevel approaches that allows controlling for whether the effects of collective social capital are confounded by access to social capital at the individual level, the picture remains unclear. Recent studies indicate that contextual effects on health may vary for different population subgroups and measuring "average" contextual effects on health for a whole population might therefore be inappropriate. In this study from northern Sweden, we investigated the associations between collective social capital and self-rated health for men and women separately, to understand if health effects of collective social capital are gendered. Two measures of collective social capital were used: one conventional measure (aggregated measures of trust, participation and voting) and one specific place-related (neighbourhood) measure. The results show a positive association between collective social capital and self-rated health for women but not for men. Regardless of the measure used, women who live in very high social capital neighbourhoods are more likely to rate their health as good-fair, compared to women who live in very low social capital neighbourhoods. The health effects of collective social capital might thus be gendered in favour for women. However, a more equal involvement of men and women in the domestic sphere would potentially benefit men in this matter. When controlling for socioeconomic, sociodemographic and social capital attributes at the individual level, the relationship between women's health and collective social capital remained statistically significant when using the neighbourhood-related measure but not when using the conventional measure. Our results support the view that a neighbourhood-related measure provides a clearer picture of the health effects of collective social capital, at least for women.     

Social capital, SES and health: an individual-level analysis

Stimulated by the finding (Kawachi et al., 1997) that social capital in communities may mediate the relationship between income inequality and health status, this article describes relationships between individual-level elements of social capital--trust, commitment and identity in the social-psychological dimension; participation in clubs and associations and civic participation in the action dimension--and self-rated health status, before and after controlling for human capital (socioeconomic status measured by income and education), using survey data collected in Saskatchewan, Canada (n = 534, 40% response rate). Income (P = 0.001) and education (P < 0.001) were related to health in the expected directions. Both income (P = 0.002) and education (P = 0.004) were related to health among the elderly; education (P = 0.035) to health among the middle-aged; and neither among the youthful respondents. Frequency of socialization with work-mates (P = 0.019) and attendance at religious services (P = 0.034) had the strongest (and positive) relationships with health of the social engagement questions, even after controlling for human capital, and participation in clubs and associations was positively related to health among the elderly (P = 0.009). But for commitment to one's own personal happiness (P = 0.039), trust, commitment and identification of various kinds were not significantly related to health. Civic participation was also unrelated to health. The main conclusion is that little evidence was found for compositional effects of social capital on health. Secondary findings are that the relationship between SES and health was the same for men and women and strongest among the elderly; that socialization with colleagues from work is relevant and that attendance at religious services and participation in clubs are related to health for the elderly.     

The impact of changes in different aspects of social capital and material conditions on self-rated health over time: A longitudinal cohort study

Individual aspects of social capital have been shown to have significant associations with health outcomes. However, research has seldom tested different elements of social capital simultaneously, whilst also adjusting for other well-known health determinants over time. This longitudinal individual-level study investigates how temporal changes in social capital, together with changes in material conditions and other health determinants affect associations with self-rated health over a six year period. We use data from the British Household Panel Survey, a randomly selected cohort which is considered representative of the United Kingdom's population, with the same individuals (N = 9303) providing responses to identical questions in 1999 and 2005. Four measures of social capital were used: interpersonal trust, social participation, civic participation and informal social networks. Material conditions were measured by total income (both individual and weighted household income), net of taxation. Other health determinants included age, gender, smoking, marital status and social class. After the baseline sample was stratified by health status, associations were examined between changes in health status and changes in all other considered variables. Simultaneous adjustment revealed that inability to trust demonstrated a significant association with deteriorating self-rated health, whereas increased levels of social participation were significantly associated with improved health status over time. Low levels of household and individual income also demonstrated significant associations with deteriorating self-rated health. In conclusion, it seems that interpersonal trust and social participation, considered valid indicators of social capital, appear to be independent predictors of self-rated health, even after adjusting for other well-known health determinants. Understandably, how trust and social participation influence health outcomes may help resolve the debate surrounding the role of social capital within the field of public health.     

Social capital: an individual or collective resource for health?

Although it is now widely acknowledged that the social environment plays an important role in people's health and well-being, there is considerable disagreement about whether social capital is a collective attribute of communities or societies, or whether its beneficial properties are associated with individuals and their social relationships. Using data from the European Social Survey (22 countries, N = 42,358), this study suggests that, rather than having a contextual influence on health, the beneficial properties of social capital can be found at the individual level. Individual levels of social trust and civic participation were strongly associated with self-rated health. At the same time, the aggregate social trust and civic participation variables at the national level were not related to people's subjective health after controlling for compositional differences in socio-demographics. Despite the absence of a main contextual effect, the current study found a more complex cross-level interaction for social capital. Trusting and socially active individuals more often report good or very good health in countries with high levels of social capital than individuals with lower levels of trust and civic participation, but are less likely to do so in countries with low levels of social capital. This suggests that social capital does not uniformly benefit individuals living in the same community or society.     

Social capital, the miniaturization of community and cannabis smoking among young adults

OBJECTIVES: The impact of social participation, trust and the miniaturization of community, i.e. the combination of high social participation and low trust, on cannabis smoking was investigated. METHODS: The 2000 public health survey in Scania is a cross-sectional study. A total of 13,715 persons aged 18-80 years, of which 3,978 persons aged 18-34 years were included in this study, answered a postal questionnaire, which represents 59% of the random sample. A logistic regression model was used to investigate the association between the social capital variables and ever having experienced cannabis smoking. The multivariate analysis was performed to investigate the importance of possible confounders (age, country of origin and education) on the differences in having experienced cannabis smoking according to social participation, trust and their four combination categories. RESULTS: Cannabis smoking is not associated with social participation, but positively associated with low trust among both men and women, and the miniaturization of community, i.e. the combination of high social participation and low trust, among men. CONCLUSIONS: This study suggests that the miniaturization of community, i.e. the combination of high social participation and low levels of generalized trust of other people, may enhance the experience of cannabis smoking.     

Social capital, the miniaturisation of community and consumption of homemade liquor and smuggled liquor during the past year. A population-based study

BACKGROUND: To study the impact of social participation, trust and the miniaturisation of community, i.e. high social participation/low trust, on consumption of homemade liquor and smuggled liquor during the past year. METHODS: The Scania 2000 public health survey is a cross-sectional, postal questionnaire study. A total of 13,604 persons aged 18-80 years were included. A logistic regression model was used to investigate the association between the social capital variables and illegal alcohol consumption. The multivariate analyses analysed the importance of confounders (age, country of origin, education and economic stress) on the differences in consumption of homemade and smuggled liquor according to the social capital variables. RESULTS: A 28.2% proportion of all men and 14.9% of all women had consumed homemade liquor during the past year. The proportions who had consumed smuggled liquor during the past year were even higher, 40.1% among men and 21.4% among women. Both forms of illegal alcohol consumption were significantly positively associated with social participation and negatively associated with trust. The miniaturisation of community category, i.e. high social participation/low trust, had significantly higher risks of consumption during the past year of the consumption of both forms of illegally provided alcohol compared to the high social capital (high social participation/high trust) category, while the low social participation/high trust category had significantly lower risks. CONCLUSION: High social participation combined with low trust is positively associated with consumption of illegally provided alcohol. The results have implications for alcohol prevention programs, because structural/social factors that may hinder information and norms concerning illegal alcohol have been identified in this study.     

Social capital and health. A study of adult twins in the U.S

BACKGROUND: A growing number of studies have suggested a link between social capital and health. However, the association may reflect confounding by factors, such as personality or early childhood environment, that are unmeasured prior common causes of both social capital and health outcomes. The purpose of this study was to investigate the impact of social capital on physical and mental health among adult twins in the U.S. METHODS: A cross-sectional national survey of twins within the National Survey of Midlife Development in the U.S. (MIDUS), 1995--1996 was analyzed in 2007. The study population included 944 twin pairs (37.2% monozygotic [MZ] and 62.8% dizygotic [DZ]). Data were obtained on individual-level social capital variables (social trust, sense of belonging, volunteer activity, and community participation); health outcomes (perceived physical and mental health, depressive symptoms and major depression); and individual covariates (age, gender, race, education, working status, and marital status). A fixed-effects model was used to examine health status among twin pairs who were discordant on levels of social capital. RESULTS: In the individual data analysis, social trust, sense of belonging, and community participation were each significantly associated with health outcomes. In the fixed-effects model, physical health remained significantly positively associated with social trust among MZ and DZ twins. However, major depression was not associated with social capital. CONCLUSIONS: The present study is the first to find the independent positive effect of social trust on self-rated physical health using fixed-effects models of twin data. The results suggest that the association between social capital and physical health status is not explained by unobserved confounds, such as personality or early childhood environment.