Individual-level Social Capital Research Articles

Impact of Individual-Level Social Capital on Quality of Life among AIDS Patients in China

BackgroundWith growing recognition of the social determinants of health, social capital is an increasingly important construct in international health. However, the application of social capital discourse in response to HIV infection remains preliminary. The aim of this study was to assess the impact of social capital on quality of life (QoL) among adult patients with acquired immune deficiency syndrome (AIDS).MethodsA convenient sample of 283 patients receiving antiretroviral treatment (ART) was investigated in Anhui province, China. QoL data were collected using the Medical Outcomes Study HIV Survey (MOS-HIV) questionnaire. Social capital was measured using a self-developed questionnaire. Logistic regression models were used to explore associations between social capital and QoL.ResultsThe study sample had a mean physical health summary (PHS) score of 50.13±9.90 and a mean mental health summary (MHS) score of 41.64±11.68. Cronbach's α coefficients of the five multi-item scales of social capital ranged from 0.44 to 0.79. When other variables were controlled for, lower individual levels of reciprocity and trust were associated with a greater likelihood of having a poor PHS score (odds ratio [OR] = 2.02) or PHS score (OR = 6.90). Additionally, the factors of social support and social networks and ties were associated positively with MHS score (OR = 2.30, OR = 4.17, respectively).ConclusionsThis is the first report to explore the effects of social capital on QoL of AIDS patients in China. The results indicate that social capital is a promising avenue for developing strategies to improve the QoL of AIDS patients in China, suggesting that the contribution of social capital should be fully exploited, especially with enhancement of QoL through social participation. Social capital development policy may be worthy of consideration.

Social capital in pregnancy and postpartum depressive symptoms: A prospective mother–child cohort study (the Rhea study)

BackgroundDepression, and to a lesser extent postpartum depressive symptoms, have been associated with characteristics of the social environment and social capital. Up to the present, mostly cross-sectional studies have explored such an association without providing a clear temporal relationship between social capital and depression. ObjectivesTo estimate prospectively the effect of individual-level self-reported maternal social capital during pregnancy on postpartum depressive symptoms. DesignProspective mother–child cohort (Rhea study). Settings4 prenatal clinics in Heraklion, Crete, Greece. ParticipantsAll women for one year beginning in February 2007. From the 1388 participants, complete data were available for 356 women. MethodsWomen self-completed two questionnaires: The Social Capital Questionnaire at about the 24th week of gestation and the Edinburgh Postnatal Depression Scale (range 0–30) at about the 8–10th week postpartum. Maternal social capital scores were categorized into three groups: the upper 10% was the high social capital group, the middle 80% was the medium and the lowest 10% was the low social capital group that served as the reference category. Multivariable log-binomial and linear regression models were performed for: the whole available sample; for participants with a history of depression and/or prenatal EPDS≥13; for participants without any previous or current depression and prenatal EPDS score<13. Potential confounders included demographic, socio-economic, lifestyle and pregnancy characteristics that have an established or potential association with maternal social capital in pregnancy or postpartum depressive symptoms or both. ResultsHigher maternal social capital was associated with lower EPDS scores (highest vs lowest group: β-coefficient=−3.95, 95% CI −7.75, −0.14). Similar effects were noted for the subscale value of life/social agency (highest vs lowest group: β-coefficient=−5.96, 95% CI −9.52, −2.37). This association remained significant for women with and without past and/or present depression only for the subscale value of life/social agency although with a more imprecise estimate. No effect was found for participation, a structural dimension of social capital. ConclusionsWomen with higher individual-level social capital in mid-pregnancy reported less depressive symptoms 6–8 weeks postpartum. Given the proposed association of perceptions of the social environment with postpartum depressive symptoms, health professionals should consider evidence-based interventions to address depression in a social framework.

Ambiguitŕ nelle risposte al position generator

The Position Generator is a popular measurement instrument for individual level social capital. Empirical studies have tested or discussed measurement properties of the instrument, but not the underlying response process. In 35 semi-structured cognitive interviews across gender, education, and age groups, we asked respondents to reflect on the 1999/2000 Social Survey of the Dutch (SSND) Position Generator. Effects found were unfamiliarity with occupations, interpretation of occupations, unknown occupations of alters, forcing alters into occupations, speculation, forgetting single alters and groups of alters, but not detectable misrepresentation of alters. In only 6 interviews all alters were working in a paid job (as the PG assumes); most remarkable alternatives were retired, unemployed, or deceased alters. An overall impression of the responses is that recalling alters to fit occupations feels counterintuitive to how relationships are memorized. Item validity and reliability are therefore likely to be negatively affected, but whether all combined ambiguities affect social capital measures is difficult to predict. Yet, an underestimation of social capital seems likely. Implications and ideas for future development of PGs are discussed.

A multilevel analysis of social capital and self-reported health: evidence from Seoul, South Korea

BackgroundThis study aims to resolve two limitations of previous studies. First, as only a few studies examining social capital have been conducted in non-western countries, it is inconclusive that the concept, which has been developed in Western societies, applies similarly to an Asian context. Second, this study considers social capital at the individual-level, area-level and cross-levels of interaction and examines its associations with health while simultaneously controlling for various confounders at both the individual-level and area-level, whereas previous studies only considered one of the two levels. The purpose of this study is therefore to examine the associations between social capital and health by using multilevel analysis after controlling for various confounders both at the individual and area-levels (i.e., concentrated disadvantage) in non-western countries.MethodsWe conducted a cross-sectional survey from December 2010 to April 2011 in Seoul, South Korea. The target population included respondents aged 25 years and older who have resided in the same administrative area since 2008. The final sample for this study consisted of 4,730 respondents within all 25 of Seoul's administrative areas.ResultsIn our final model, individual-level social capital, including network sources (OR = 1.23; 95% CI = 1.11-1.37) and organizational participation (OR = 2.55; 95% CI = 2.11-3.08) was positively associated with good/very good health. Interestingly, the individual × area organizational participation cross-level interaction was negatively associated with good/very good health (OR = 0.40; 95% CI = 0.32-0.50), indicating that in areas with higher organizational participation, individuals with high organizational participation were less likely to report good/very good health when compared to low organizational participation individuals.ConclusionOur study provides evidence that individual-level social capital is associated with self-reported health, even after controlling for both individual and area-level confounders. Although this study did not find significant relationships between area-level organizational participation and self-reported health, this study found the cross-level interaction for social capital. Hence, in areas with lower organizational participation, the probability of reporting good/very good health is higher for individuals with high organizational participation than individuals with low organizational participation. This study, albeit tentatively, suggests that policy makers should focus upon social capital when making policies which aim to enhance one's health.

Service Club Membership and Forms of Social Capital among Swedish Community Elites

Social clubs and other voluntary settings have repeatedly been pointed out as sites where social elites encounter each other and enjoy the opportunity to cultivate their within-elite personal relations under informal circumstances. Since elites’ personal connections represent a non-trivial aspect of their entrepreneurial opportunity structures, i.e. how they are able to get things done, it is essential to understand the significance of voluntary activities for elites’ personal networks. We lack, however, unequivocal knowledge about this. The aim of the present article is therefore to empirically explore how service club membership—one particularly prevalent form of voluntary activity among community elites—potentially affects such actors’ personal networks. The study is theoretically informed by a network-based conception of individual-level social capital, and distinguishes between brokerage and closure forms of social capital-producing mechanisms. Empirically, the study draws upon data collected through personal interviews with 248 local elites (politicians, corporate leaders, civil servants, etc.) in four mid-sized Swedish municipalities, and focuses particularly on the potential effect of Rotary Club membership among the elites. The results suggest that Rotary Club membership may have an optimizing impact on local elites’ personal networks, in terms of the relative prevalence of brokerage opportunities and tendencies towards social closure.

P1-364 Is social capital in the workplace associated with work-related injury and disability? A systematic review of the epidemiologic literature

IntroductionSocial capital is defined as resources embedded in social relationships. Social capital in the workplace may include social support, interpersonal trust, respect, and reciprocity; and may occur at both the...

개인수준의 사회적 자본이 우울증에 미치는 영향

Objectives: This study was performed to investigate the relationship between individual-level social capital and depression. Methods: Data from the 2009 Community Health Survey were analyzed for this study. We used chi-square tests and hierarchical logistic regression analyses to determine the relationship between individual-level social capital and depression. The Korean version of the Center for Epidemiological Studies-Depression Scale was used to measure depression. Results: After controlling for socio-demographic factors such as, health behavior and chronic illness morbidity, that are associated with individual-level social capital, trust and participation significantly affected depression. Respondents with be trust(0.536, 95% CI 0.419-0.685) and who participate in informal groups(0.657, 95% CI 0.516-0.836) had significantly lower odds ratios of depression. Conclusions: Considering and introducing measures to increase the social capital of residents, need reduce depression. It is especially necessary to enhance resident empowerment.

Social Capital Influence in Illicit Drug Use Among Racial/Ethnic Groups in the United States

Data from the 2003 National Survey on Drug Use and Health was utilized to elucidate the relationship between individual-level social capital and illicit drug use among racial/ethnic groups. Analysis of variance indicated that Whites had different perceptions of social capital compared to other groups, in measures of social participation, neighborhood cohesion, trust, and norms of reciprocity. Logistic regression analysis showed that individual-level social capital, measured by trust and norms of reciprocity, was weakly associated with illicit drug use. However, individuals with higher social participation were less likely to have used illicit drugs ever or during the month prior to the interview. The association between social capital and illicit drug use is discussed, as well as the role of social participation in illicit drug use. Rather than an individual-level measure of social capital, future research should employ a neighborhood-level measure of social capital that aggregates neighborhood cohesion, trust, norms of reciprocity, and social participation.

Social capital, community size and utilization of health services: A lagged analysis

Objectives We examine the relationship between social capital, community size and GP visits, and conceptualize social capital as a stock variable measured at a prior point in time. Methods Data from the 2002 Canadian Community Health Survey and the 2001 Canadian Census are merged with GP visit data from the Ontario Health Ministry. Negative binomial regression is used to measure the impact of community-level (CSC) and individual-level social capital (ISC) on GP visits. CSC is measured with the Petris Index using employment levels in religious and community-based organizations, and ISC is measured along multiple dimensions. Results The effect of social capital varies by community size. A one standard deviation increase in the Petris Index in larger communities (population > 100,000) leads to a 2.6% decrease in GP visits with an annual offset in public spending of $66.4M. Tangible social support—a measure of ISC—also exhibited large effects on GP visits. In smaller communities (population 10,000–100,000), only increased ISC exhibited an impact on GP visits. Age had no effect on the association between social capital and GP visits. Conclusions Each form of social capital likely operates through different mechanisms and impact differs by community size. Stronger CSC likely obviates some physician visits in larger communities that involve counseling/caring services while some forms of ISC may act similarly in smaller communities.

Social capital and self‐rated health in Argentina

The potential link between social capital and health suggests important pathways by which health may be improved. We examine this relationship using a unique data set from Argentina. This national survey allows us to determine whether the relationships between social capital and health that have been found in the US and Europe also apply to countries in South America (Argentina is the second-largest country in South America with a population of approximately 40 million). We estimate a causal effect of individual-level social capital on health using a measure of informal social interactions as our measure of social capital. Using information about access to public transportation as instrumental variables, we find that both men and women with higher levels of social capital report better health.

Multi-level, cross-sectional study of workplace social capital and smoking among Japanese employees

BackgroundSocial capital is hypothesized to be relevant to health promotion, and the association between community social capital and cigarette smoking has been examined. Individual-level social capital has been found to be associated with smoking cessation, but evidence remains sparse on the contextual effect of social capital and smoking. Further, evidence remains sparse on the association between smoking and social capital in the workplace, where people are spending an increasing portion of their daily lives. We examined the association between workplace social capital and smoking status among Japanese private sector employees.MethodsWe employed a two-stage stratified random sampling procedure. Of the total of 1,800 subjects in 60 companies, 1,171 (men/women; 834/337) employees (65.1%) were identified from 46 companies in Okayama in 2007. Workplace social capital was assessed in two dimensions; trust and reciprocity. Company-level social capital was based on inquiring about employee perceptions of trust and reciprocity among co-workers, and then aggregating their responses in order to calculate the proportion of workers reporting mistrust and lack of reciprocity. Multilevel logistic regression analysis was conducted using Markov Chain Monte Carlo methods to explore whether individual- and company-level social capital was associated with smoking. Odds ratios (ORs) and 95% credible intervals (CIs) for current smoking were obtained.ResultsOverall, 33.3% of the subjects smoked currently. There was no relationship between individual-level mistrust of others and smoking status. By contrast, one-standard deviation change in company-level mistrust was associated with higher odds of smoking (OR: 1.25, 95% CI: 1.06-1.46) even after controlling for individual-level mistrust, sex, age, occupation, educational attainment, alcohol use, physical activity, body mass index, and chronic diseases. No clear associations were found between lack of reciprocity and smoking both at the individual- and company-level.ConclusionsCompany-level mistrust is associated with higher likelihood of smoking among Japanese employees, while individual perceptions of mistrust were not associated. The link between lack of reciprocity and smoking was not supported either at the individual- or company-level. Further studies are warranted to examine the possible link between company-level trust and smoking cessation in the Japanese workplace.

Does Social Capital Promote Physical Activity? A Population-Based Study in Japan

BackgroundTo examine the association between individual-level social capital and physical activity.Methodology/Principal FindingsIn February 2009, data were collected in a population-based cross-sectional survey in Okayama city, Japan. A cluster-sampling approach was used to randomly select 4,000 residents from 20 school districts. A total of 2260 questionnaires were returned (response rate: 57.4%). Individual-level social capital was assessed by an item inquiring about perceived trust of others in the community (cognitive dimension of social capital) categorized as low trust (43.0%), mid trust (38.6%), and high trust (17.3%), as well as participation in voluntary groups (structural dimension of social capital), which further distinguished between bonding (8.9%) and bridging (27.1%) social capital. Using logistic regression, we calculated the odds ratios (ORs) and 95% confidence intervals (CIs) for physical inactivity associated with each domain of social capital. Multiple imputation method was employed for missing data. Among total participants, 68.8% were physically active and 28.9% were inactive. Higher trust was associated with a significantly lower odds of physical inactivity (OR = 0.58, 95% CI = 0.42–0.79) compared with low trust. Both bridging and bonding social capital were marginally significantly associated with lower odds of physical inactivity (bridging, OR = 0.79, 95% CI = 0.62–1.00; bonding, OR = 0.71, 95% CI = 0.48–1.03) compared with lack of structural social capital.Conclusions/SignificanceLow individual-level social capital, especially lower trust of others in the community, was associated with physical inactivity among Japanese adults.

Change in Individual-level Social Capital Indicators among Elderly Salon Program Participants

The purpose of this study was to examine whether the salon program for elderly can improve individual level social capital indicators corresponding to measures of social networks, religious group involvement, social support, social trust and social norm. The salon program started in 2007. We had before-and-after survey in 2006 and 2008. We analyzed 1606 samples who participated in these surveys. Some of individual-level social capital indicators were improved in Salon program participants compared with non-participants. These results suggest that our intervention program can enhance individual-level social capital.

The different effects of vertical social capital and horizontal social capital on dental status: A multilevel analysis

Few studies distinguish between the effects of different forms of social capital on health and of those that do none use physical indicators of health as an outcome variable. The objective of this study was to determine whether vertical and horizontal social capital had different associations with dental status of elderly Japanese. In this cross-sectional study, self-administered questionnaires were mailed to elderly individuals living in 25 Japanese communities in 2003. Data from 5560 respondents (49.9%, 72.9+/-6.0 years) included information on social capital, numbers of remaining teeth, health behaviors, physical and mental health, and socioeconomic status. Vertical social capital was defined as participating in groups which encouraged hierarchical relations and horizontal social capital as participating in groups of equals. A multilevel logistic regression analysis was conducted to assess the association between social capital and number of remaining teeth (< or = 19 teeth or > or = 20 teeth). The prevalence of people with 19 or less teeth was 70.7%. Univariate analysis showed significant beneficial associations between individual horizontal social capital and number of remaining teeth. After adjusting for individual- and community-level covariates in multilevel analysis, community-level horizontal social capital still showed beneficial association. Compared to respondents living in highest horizontal social capital areas, those living in lowest horizontal social capital areas had a 1.25 times higher odds ratio for having 19 or less teeth. Individual-level horizontal social capital also showed beneficial effects on number of remaining teeth. Community- and individual-level vertical social capital did not show significant associations with dental status. The results suggest that horizontal social capital, not vertical social capital, has beneficial effects on numbers of remaining teeth in older Japanese adults.

How are individual-level social capital and poverty associated with health equity? A study from two Chinese cities

BackgroundA growing body of literature has demonstrated that higher social capital is associated with improved health conditions. However, some research indicated that the association between social capital and health was substantially attenuated after adjustment for material deprivation. Studies exploring the association between poverty, social capital and health still have some serious limitations. In China, health equity studies focusing on urban poor are scarce. The purpose of this study is therefore to examine how poverty and individual-level social capital in urban China are associated with health equity.MethodsOur study is based on a household study sample consisting of 1605 participants in two Chinese cities. For all participants, data on personal characteristics, health status, health care utilisation and social capital were collected. Factor analysis was performed to extract social capital factors. Dichotomised social capital factors were used for logistic regression models. A synergy index (if it is above 1, we can know the existence of the co-operative effect) was computed to examine the interaction effect between lack of social capital and poverty.ResultsResults indicated the poor had an obviously higher probability of belonging to the low individual-level social capital group in all the five dimensions, with the adjusted odds ratios ranging from 1.42 to 2.12. When the other variables were controlled for in the total sample, neighbourhood cohesion (NC), and reciprocity and social support (RSS) were statistically associated with poor self-rated health (NC: OR = 1.40; RSS: OR = 1.34). However, for the non-poor sub-sample, no social capital variable was a statistically significant predictor. The synergy index between low individual-level NC and poverty, and between low individual-level RSS and poverty were 1.22 and 1.28, respectively, indicating an aggravating effect between them.ConclusionIn this study, we have shown that the interaction effect between poverty and lack of social capital (NC and RSS) was a good predictor of poor SRH in urban China. Improving NC and RSS may be helpful in reducing health inequity; however, poverty reduction is more important and therefore should be implemented at the same time. Policies that attempt to improve health equity via social capital, but neglect poverty intervention, would be counter-productive.

Aging, social capital, and health care utilization in Canada

This paper examines relationships between aging, social capital, and healthcare utilization. Cross-sectional data from the 2001 Canadian Community Health Survey and the Canadian Census are used to estimate a two-part model for both GP physicians (visits) and hospitalization (annual nights) focusing on the impact of community- (CSC) and individual-level social capital (ISC). Quantile regressions were also performed for GP visits. CSC is measured using the Petris Social Capital Index (PSCI) based on employment levels in religious and community-based organizations [NAICS 813XX] and ISC is based on self-reported connectedness to community. A higher CSC/lower ISC is associated with a lower propensity for GP visits/higher propensity for hospital utilization among seniors. The part-two (intensity model) results indicated that a one standard deviation increase (0.13%) in the PSCI index leads to an overall 5% decrease in GP visits and an annual offset in Canada of approximately $225 M. The ISC impact was smaller; however, neither measure was significant in the hospital intensity models. ISC mainly impacted the lower quantiles in which there was a positive association with GP utilization, while the impact of CSC was strongest in the middle quantiles. Each form of social capital likely operates through a different mechanism: ISC perhaps serves an enabling role by improving access (e.g. transportation services), while CSC serves to obviate some physician visits that may involve counseling/caring services most important to seniors. Policy implications of these results are discussed herein.

Development of the social capital questionnaire in Greece

The Greek version of the social capital questionnaire (SCQ-G) was evaluated in a sample of 521 adults drawn from three different urban areas in Greece. Exploratory factor analysis followed by multi-trait scaling yielded six factors: Participation in the Community, Feelings of Safety, Family/Friends Connections, Value of Life and Social Agency, Tolerance of Diversity, and Work Connections. The factor solution is similar to the patterns identified originally in Australia and the US. Variations suggest that social capital does not share the same structure in different countries. The SCQ-G is a useful scale to measure individual-level social capital in Greece. Social capital measurement tools should be validated in each cultural or national setting in which they are used.

Individual-level measures of social capital as predictors of all-cause and cardiovascular mortality: a population-based prospective study of men and women in Finland

Individual-level social capital was assessed for prediction of mortality in a nationally representative study population aged 30-99 years at the baseline. A total of 90% of the original sample had participated in a comprehensive health examination (Mini-Finland Health Survey) in 1978-1980. After the first 5 years of the 24-year follow-up period, 1,196 of 3,014 men and 1,280 of 3,689 women died. Individual-level social capital was determined by factor analysis that revealed three factors: residential stability, leisure participation and interpersonal trust. Factor analysis showed a gender difference in leisure social participation. All-cause mortality and cardiovascular mortality were analyzed using Cox proportional hazard models. Adjusted for demographic, life style and biological risk factors, and for health and socio-economic status, leisure participation was associated with reduced all-cause mortality in men (hazard ratio, HR: 0.94; 95% confidence interval, CI: 0.89-1.00). This association seems to be related to economic status in men. Age modifies the effect of interpersonal trust on all-cause mortality in men. In women, leisure participation (HR: 0.96; 95% CI: 0.91-1.00) and interpersonal trust (HR: 0.69; 95% CI: 0.51-0.93) predicted all-cause mortality, and the latter also cardiovascular mortality (HR: 0.93; 95% CI: 0.86-1.00). The associations between individual-level social capital and mortality are gender- and age-related. Understanding the gender and age perspectives appears to be essential for better insight into the interrelations between social capital and health.

Psychometric evaluation of a short measure of social capital at work

BackgroundPrior studies on social capital and health have assessed social capital in residential neighbourhoods and communities, but the question whether the concept should also be applicable in workplaces has been raised. The present study reports on the psychometric properties of an 8-item measure of social capital at work.MethodsData were derived from the Finnish Public Sector Study (N = 48,592) collected in 2000–2002. Based on face validity, an expert unfamiliar with the data selected 8 questionnaire items from the available items for a scale of social capital. Reliability analysis included tests of internal consistency, item-total correlations, and within-unit (interrater) agreement by rwg index. The associations with theoretically related and unrelated constructs were examined to assess convergent and divergent validity (construct validity). Criterion-related validity was explored with respect to self-rated health using multilevel logistic regression models. The effects of individual level and work unit level social capital were modelled on self-rated health.ResultsThe internal consistency of the scale was good (Cronbach's alpha = 0.88). The rwg index was 0.88, which indicates a significant within-unit agreement. The scale was associated with, but not redundant to, conceptually close constructs such as procedural justice, job control, and effort-reward imbalance. Its associations with conceptually more distant concepts, such as trait anxiety and magnitude of change in work, were weaker. In multilevel models, significantly elevated age adjusted odds ratios (ORs) of poor self-rated health (OR = 2.42, 95% confidence interval (CI): 2.24–2.61 for the women and OR = 2.99, 95% CI: 2.56–3.50 for the men) were observed for the employees in the lowest vs. highest quartile of individual level social capital. In addition, low social capital at the work unit level was associated with a higher likelihood of poor self-rated health.ConclusionPsychometric techniques show our 8-item measure of social capital to be a valid tool reflecting the construct and displaying the postulated links with other variables.

A Multilevel Analysis of Key Forms of Community- and Individual-Level Social Capital as Predictors of Self-Rated Health in the United States

Communities may be rich or poor in a variety of stocks of social capital. Studies that have investigated relations among these forms and their simultaneous and combined health effects are sparse. Using data on a sample of 24,835 adults (more than half of whom resided in core urban areas) nested within 40 U.S. communities from the Social Capital Benchmark Survey, correlational and factor analyses were applied to determine appropriate groupings among eight key social capital indicators (social trust, informal social interactions, formal group involvement, religious group involvement, giving and volunteering, diversity of friendship networks, electoral political participation, and non-electoral political participation) at each of the community and individual levels. Multilevel logistic regression models were estimated to analyze the associations between the grouped social capital forms and individual self-rated health. Adjusting the three identified community-level social capital groupings/scales for one another and community- and individual-level sociodemographic and socioeconomic characteristics, each of the odds ratios of fair/poor health associated with living in a community one standard deviation higher in the respective social capital form was modestly below one. Being high on all three (vs. none of the) scales was significantly associated with 18% lower odds of fair/poor health (odds ratio = 0.82, 95% confidence interval = 0.69-0.98). Adding individual-level social capital variables to the model attenuated two of the three community-level social capital associations, with a few of the former characteristics appearing to be moderately significantly protective of health. We further observed several significant interactions between community-level social capital and one's proximity to core urban areas, individual-level race/ethnicity, gender, and social capital. Overall, our results suggest primarily beneficial yet modest health effects of key summary forms of community social capital, and heterogeneity in some of these effects by urban context and population subgroup.