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Study objectives: To examine if social networks with children, relatives, friends, and confidants predict survival in older Australians over 10 years after controlling for a range of demographic, health, and lifestyle variables.

Design: Prospective longitudinal cohort study (the Australian longitudinal study of aging)

Setting: Adelaide, South Australia.

Participants: 1477 persons aged 70 years or more living in the community and residential care facilities.

Main results: After controlling for a range of demographic, health, and lifestyle variables, greater networks with friends were protective against mortality in the 10 year follow up period. The hazard ratio for participants in the highest tertile of friends networks compared with participants in the lowest group was 0.78 (95%CI 0.65 to 0.92). A smaller effect of greater networks with confidants (hazard ratio = 0.84; 95%CI  = 0.71 to 0.98) was seen. The effects of …