Kaplan–Meier curves comparing groups with and without cognitive impairment (MMSE<25) among subjects with dementia (left, n = 3,336), depression (middle, n = 1,129), and other diagnoses (right, n = 2,207).

<p>Footnote: Shaded areas present 95% confidence intervals; all the p-values for log-rank tests <0.01.</p>