American Journal of Epidemiology Vol. 145, No. 6: 516-523
Copyright © 1997 by The Johns Hopkins University School of Hygiene and Public Health
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Relation of Social Network Characteristics to 5-Year Mortality among Young-Old versus Old-Old White Women in an Urban Community
1Department of Public Health, Kochi Medical School Kochi, Japan
2Department of Epidemiology and Preventive Medicine, School of Medicine, University of Maryland Baltimore, MD
Reprint requests to Dr. Jay Magaziner, Department of Epidemiology and Preventive Medicine, School of Medicine, University of Maryland, 660 W. Redwood Street, Room 142, Baltimore, MD 21201.
This study examines age-related differences in the association between social network characteristics and mortality for aged white women. Subjects include a community-dwelling sample of white women aged 
65 years (n = 806), who lived in northeast Baltimore, Maryland, in 1984. Three characteristics of social networks were measured: availability of network resources; contact with network resources; and integration into the neighborhood. The association of social network with 5-year mortality was examined with a proportional hazards model adjusting for perceived health status, impairment in physical activities of daily living, number of chronic conditions, and years of education. Analyses were stratified by age (65–74 years, 
75 years). Elements of social network contact and neighborhood integration were associated with reduced mortality among women aged 75 years, but not among women aged 65–74 years. In the 75 years group, women who had no contact with children, friends, and group organizations showed hazard ratios (95% confidence intervals (CI)) of 3.1 (1.2–7.5), 2.2 (1.0–4.9), and 2.8 (1.2–6.5), respectively. Women who had lived 
10 years in the neighborhood and women who had no interaction with local merchants showed hazard ratios of 2.5 (95% Cl 1.3–4.8) and 2.2 (95% Cl 1.2–3.9), respectively. Thus, both age and specific aspects of network structure were found to influence the association between social networks and mortality in elderly women. Am J Epidemiol 1997;145:516-23.
aged; mortality; social adjustment; social support; women
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