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. Author manuscript; available in PMC: 2016 Feb 23.
Published in final edited form as: J Int Neuropsychol Soc. 2015 Nov 13;22(1):66–75. doi: 10.1017/S1355617715001113

Table 1.

Demographic characteristics by study cohort

MARS
n = 453
MAP
n = 1,371
ROS
n = 1,030
Mean age (SD) 73.6 (6.3) 80.1 (7.2) 75.1 (7.2)
Mean education (SD) 14.8 (3.4) 14.7 (2.9) 18.3 (3.2)
% female 74 74.5 69.3
% African American 100 6.9 7.1
Mean MMSEa (SD) 27.8 (2.4) 27.9 (2.1) 28.5 (1.6)
a

Mini-Mental State Examination.

MARS, Minority Aging Research Study; MAP, Rush Memory and Aging Project; ROS, Religious Orders Study.