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. Author manuscript; available in PMC: 2015 Oct 13.
Published in final edited form as: J Aging Health. 2015 Mar 24;27(7):1199–1222. doi: 10.1177/0898264315577590

Table 2.

Demographic Characteristics of Normal, Impaired, and Demented Participants Who Completed the Neuropsychological Battery.

Characteristic Normal (n = 564) ILM (n = 269) MDI (n = 399) Dementia (n = 19) p value
Age (SD) 60.3 (9.2) 60.5 (8.7) 63.5 (9.8) 73.5 (5.6) <.01
Education (%) .01
 <High school 170 (30.1) 91 (33.8) 164 (41.1) 8 (42.1)
 Some college 144 (25.5) 77 (28.6) 103 (25.8) 6 (31.6)
 College degree 250 (44.3) 101 (37.5) 132 (33.1) 5 (26.3)
Sex .45
 Male 260 (46.1) 119 (44.2) 197 (49.4) 7 (36.8)
 Female 304 (53.9) 150 (55.8) 202 (50.6) 12 (63.2)
APOE <.01
 e4− 197 (79.1) 97 (77.6) 171 (79.5) 3 (17.6)
 e4+ 52 (20.9) 28 (22.4) 44 (20.5) 14 (82.4)

Note. Results based on participants included in the validation set. Analysis of covariance and chi-square tests used to assess differences in continuous and categorical variables, respectively. ILM = Impaired learning and memory; MDI = Multidomain impairment; APOE = apolipoprotein E.

Bold font indicates statistical significance p < .05.