Skip to main content
. Author manuscript; available in PMC: 2010 May 27.
Published in final edited form as: Neurobiol Aging. 2006 Jul 27;28(9):1316–1321. doi: 10.1016/j.neurobiolaging.2006.06.016

Table 1.

Comparison of demographic data between CHS Cognition Study subjects who received three clinical evaluations and MRI scans, and the full set of CHS Cognition Study subjects who received at least one clinical evaluation and MRI scan

Three evaluations At least A 1997 evaluation p
Gender (female, male) 20, 10 238, 151
Race (Caucasian, African-American, other) 21,9,0 308, 80, 1
Education level (up to, beyond high school) 20, 10 236, 153
Age in 1997–1999 (mean, S.D.) 73.37, 4.09 73.55, 4.24 0.81
Hachinski ischemic scale (mean, S.D., N/A) 0.93, 0.83, 0 1.29, 1.67, 65 0.049
Unified Parkinson disease rating scale (UPDRS; mean, S.D., N/A) 3.8, 3.85, 0 5.46, 5.70, 65 0.037
Modified mini mental state exam (3MSE; mean, S.D.) 96.03, 3.61 93.03, 8.57 0.00034
Digit-symbol substitution test (DSST; mean, S.D.) 45.57, 10.97 43.15, 14.03 0.26

All data items were measured during the 1997–1999 visit. Entries in bold show variables that were significantly different between the groups under two-sided t-tests at the p = 0.05 level.