The Prospective Association of Social Integration With Life Span and Exceptional Longevity in Women

Claudia Trudel-Fitzgerald, Emily S Zevon, Ichiro Kawachi, Reginald D Tucker-Seeley, Francine Grodstein, Laura D Kubzansky and Lynn Martire

The Journals of Gerontology: Series B, 2020, vol. 75, issue 10, 2132-2141

Abstract: ObjectivesAlthough stronger social relationships have been associated with reduced mortality risk in prior research, their associations with favorable health outcomes are understudied. We evaluated whether higher social integration levels were associated with longer life span and greater likelihood of achieving exceptional longevity.MethodWomen from the Nurses’ Health Study completed the Berkman–Syme Social Network Index in 1992 (N = 72,322; average age = 58.80 years), and were followed through 2014 with biennial questionnaires. Deaths were ascertained from participants’ families, postal authorities, and death registries. Accelerated failure time models adjusting for relevant covariates estimated percent changes in life span associated with social integration levels; logistic regressions evaluated likelihood of surviving to age 85 years or older among women who could reach that age during follow-up (N = 16,818).ResultsAfter controlling for baseline demographics and chronic diseases, socially integrated versus isolated women had 10% (95% confidence interval [CI] = 8.80–11.42) longer life span and 41% (95% CI = 1.28–1.54) higher odds of surviving to age 85 years. All findings remained statistically significant after further adjusting for health behaviors and depression.DiscussionBetter social integration is related to longer life span and greater likelihood of achieving exceptional longevity among midlife women. Findings suggest social integration may be an important psychosocial asset to evaluate for promoting longer, healthier lives.

Keywords: Death; Health; Mortality; Relationships; Social isolation (search for similar items in EconPapers)
Date: 2020
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