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Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese
BACKGROUND: Few prospective cohort studies have assessed the association between social capital and mortality. The studies were conducted only in Western countries and did not use the same social capital indicators. The present prospective cohort study aimed to examine the relationships between vari...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144463/ https://www.ncbi.nlm.nih.gov/pubmed/21702996 http://dx.doi.org/10.1186/1471-2458-11-499 |
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author | Aida, Jun Kondo, Katsunori Hirai, Hiroshi Subramanian, S V Murata, Chiyoe Kondo, Naoki Ichida, Yukinobu Shirai, Kokoro Osaka, Ken |
author_facet | Aida, Jun Kondo, Katsunori Hirai, Hiroshi Subramanian, S V Murata, Chiyoe Kondo, Naoki Ichida, Yukinobu Shirai, Kokoro Osaka, Ken |
author_sort | Aida, Jun |
collection | PubMed |
description | BACKGROUND: Few prospective cohort studies have assessed the association between social capital and mortality. The studies were conducted only in Western countries and did not use the same social capital indicators. The present prospective cohort study aimed to examine the relationships between various forms of individual social capital and all-cause mortality in Japan. METHODS: Self-administered questionnaires were mailed to subjects in the Aichi Gerontological Evaluation Study (AGES) Project in 2003. Mortality data from 2003 to 2008 were analyzed for 14,668 respondents. Both cognitive and structural components of individual social capital were collected: 8 for cognitive social capital (trust, 3; social support, 3; reciprocity, 2) and 9 for structural social capital (social network). Cox proportional hazard models stratified by sex with multiple imputation were used. Age, body mass index, self-rated health, current illness, smoking history, alcohol consumption, exercise, equivalent income and education were used as covariates. RESULTS: During 27,571 person-years of follow-up for men and 29,561 person-years of follow-up for women, 790 deaths in men and 424 in women were observed. In the univariate analyses for men, lower social capital was significantly related to higher mortality in one general trust variable, all generalised reciprocity variables and four social network variables. For women, lower social capital was significantly related to higher mortality in all generalised reciprocity and four social network variables. After adjusting for covariates, lower friendship network was significantly associated with higher all-cause mortality among men (meet friends rarely; HR = 1.30, 95%CI = 1.10-1.53) and women (having no friends; HR = 1.81, 95%CI = 1.02-3.23). Among women, lower general trust was significantly related to lower mortality (most people cannot be trusted; HR = 0.65, 95%CI = 0.45-0.96). CONCLUSIONS: Friendship network was a good predictor for all-cause mortality among older Japanese. In contrast, mistrust was associated with lower mortality among women. Studies with social capital indices considering different culture backgrounds are needed. |
format | Online Article Text |
id | pubmed-3144463 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-31444632011-07-28 Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese Aida, Jun Kondo, Katsunori Hirai, Hiroshi Subramanian, S V Murata, Chiyoe Kondo, Naoki Ichida, Yukinobu Shirai, Kokoro Osaka, Ken BMC Public Health Research Article BACKGROUND: Few prospective cohort studies have assessed the association between social capital and mortality. The studies were conducted only in Western countries and did not use the same social capital indicators. The present prospective cohort study aimed to examine the relationships between various forms of individual social capital and all-cause mortality in Japan. METHODS: Self-administered questionnaires were mailed to subjects in the Aichi Gerontological Evaluation Study (AGES) Project in 2003. Mortality data from 2003 to 2008 were analyzed for 14,668 respondents. Both cognitive and structural components of individual social capital were collected: 8 for cognitive social capital (trust, 3; social support, 3; reciprocity, 2) and 9 for structural social capital (social network). Cox proportional hazard models stratified by sex with multiple imputation were used. Age, body mass index, self-rated health, current illness, smoking history, alcohol consumption, exercise, equivalent income and education were used as covariates. RESULTS: During 27,571 person-years of follow-up for men and 29,561 person-years of follow-up for women, 790 deaths in men and 424 in women were observed. In the univariate analyses for men, lower social capital was significantly related to higher mortality in one general trust variable, all generalised reciprocity variables and four social network variables. For women, lower social capital was significantly related to higher mortality in all generalised reciprocity and four social network variables. After adjusting for covariates, lower friendship network was significantly associated with higher all-cause mortality among men (meet friends rarely; HR = 1.30, 95%CI = 1.10-1.53) and women (having no friends; HR = 1.81, 95%CI = 1.02-3.23). Among women, lower general trust was significantly related to lower mortality (most people cannot be trusted; HR = 0.65, 95%CI = 0.45-0.96). CONCLUSIONS: Friendship network was a good predictor for all-cause mortality among older Japanese. In contrast, mistrust was associated with lower mortality among women. Studies with social capital indices considering different culture backgrounds are needed. BioMed Central 2011-06-25 /pmc/articles/PMC3144463/ /pubmed/21702996 http://dx.doi.org/10.1186/1471-2458-11-499 Text en Copyright ©2011 Aida et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Aida, Jun Kondo, Katsunori Hirai, Hiroshi Subramanian, S V Murata, Chiyoe Kondo, Naoki Ichida, Yukinobu Shirai, Kokoro Osaka, Ken Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title | Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title_full | Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title_fullStr | Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title_full_unstemmed | Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title_short | Assessing the association between all-cause mortality and multiple aspects of individual social capital among the older Japanese |
title_sort | assessing the association between all-cause mortality and multiple aspects of individual social capital among the older japanese |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3144463/ https://www.ncbi.nlm.nih.gov/pubmed/21702996 http://dx.doi.org/10.1186/1471-2458-11-499 |
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