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. Author manuscript; available in PMC: 2010 Jun 2.
Published in final edited form as: J Neurosci. 2009 Dec 2;29(48):15223–15231. doi: 10.1523/JNEUROSCI.3252-09.2009

Table 1.

Sample characteristics for the healthy elderly group

Baseline 1 year 2 years
n 142 142 89
Sex (females/males) 68/ 74 68/ 74 38/ 51
Age 75.6 (59.8–90.2) 76.7 (60.8–91.3) 78.7 (65.1–92.3)
MMSE 29.2 (25–30) 29.1 (24–30) 29.1 (26–30)
CDR sum of boxes 0.03 (0–0.5) 0 (0–0) 0 (0–0)