Six-year predictors of successful aging were analyzed for 356 Alameda
County Study men and women aged 65-95 years measured prospectively in
1984 and followed to 1990, Successful aging was defined as needing no
assistance nor having difficulty on any of 13 activity/mobility measur
es plus little or no difficulty on five physical performance measures.
After adjusting for baseline successful aging, sex, and age, the auth
ors found that 1984 predictors of 1990 successful aging included incom
e above the lowest quintile (odds ratio (OR) = 2.01, 95% confidence in
terval (Cl) 0.99-4.11), greater than or equal to 12 years of education
(OR = 1.67, 95% CI 0.98-2.84), white ethnicity (OR = 2.12, 95% Cl 0.9
3-4.86), diabetes (OR = 0.10, 95% CI 0.01-0.79), chronic obstructive p
ulmonary disease (OR = 0.41, 95% CI 0.17-0.97), arthritis (OR = 0.43,
95% CI 0.26-0.71), and hearing problems (OR = 0.48, 95% CI 0.25-0.89).
Adjusting for all variables, the authors found that behavioral and ps
ychosocial predictors included the absence of depression (OR = 1.94, 9
5% CI 1.10-3.42), having close personal contacts (OR = 1.82, 95% CI 1.
05-3.18), and often walks for exercise (OR = 1.77, 95% CI 1.00-3.12).
Cross-sectional comparisons at follow-up revealed significantly higher
community involvement, physical activity, and mental health for those
aging successfully.