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Am J Public Health. 2008 Jul;98(7):1221-7. doi: 10.2105/AJPH.2007.115923. Epub 2008 May 29.

Social network, cognitive function, and dementia incidence among elderly women.

Author information

1
Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA 91101, USA. valerie.c.crooks@kp.org

Abstract

OBJECTIVES:

We examined whether social networks had a protective association with incidence of dementia among elderly women.

METHODS:

We prospectively studied 2249 members of a health maintenance organization who were 78 years or older, were classified as free of dementia in 2001, and had completed at least 1 follow-up interview in 2002 through 2005. We used the Telephone Interview for Cognitive Status-modified, the Telephone Dementia Questionnaire, and medical record review to assess cognitive status. We used the Lubben Social Network Scale-6 to assess social network. We estimated hazard ratios for incident dementia with Cox proportional hazards models, adjusting for age at entry, education, hormone use, cognitive status scores, and health conditions.

RESULTS:

We identified 268 incident cases of dementia during follow-up. Compared with women with smaller social networks, the adjusted hazard ratio for incident dementia in women with larger social networks was 0.74 (95% confidence interval=0.57, 0.97).

CONCLUSIONS:

Our findings suggest that larger social networks have a protective influence on cognitive function among elderly women. Future studies should explore which aspects of social networks are associated with dementia risk and maintenance of cognitive health.

PMID:
18511731
PMCID:
PMC2424087
DOI:
10.2105/AJPH.2007.115923
[Indexed for MEDLINE]
Free PMC Article

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