Exercise Is Associated with Reduced Risk for Incident Dementia among Persons 65 Years of Age and Older

Figure 1. Persons who exercised 3 or more times per week were more likely to be dementia-free than those who exercised fewer
than 3 times per week.
Kaplan–Meier survival estimates for the probabilities of being dementia-free.
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Ann Intern Med
January 17, 2006
vol. 144
no. 2
73-81