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. Author manuscript; available in PMC: 2011 Jun 3.
Published in final edited form as: Neurology. 2008 Jan 30;70(19 Pt 2):1771–1777. doi: 10.1212/01.wnl.0000286941.74372.cc

Table 1.

Demographic and clinical characteristics by APOE genotype

Characteristic APOE-ε4− APOE-ε4+ F p Value
Mean SD n Mean SD n
Age 55.12 2.26 437 55.03 2.18 189 0.88 0.349
Current AFQTa 63.96 20.59 437 66.13 20.16 189 1.48 0.23
Pre-Induction AFQTb 60.03 22.12 437 65.51 21.54 188 8.18 0.004
Education (years) 13.79 1.99 418 13.99 2.21 175 1.11 0.29
Household Incomec 5.98 2.93 435 5.69 2.85 189 1.33 0.25
Worry about memoryd 3.23 0.88 401 3.04 0.94 180 5.37 0.02
Depressive symptomsfe 8.43 8.31 418 8.65 8.74 175 0.16 0.72
a

Armed Forced Qualification Test percentile scores.

b

Pre-induction refers to induction into the military.

c

1(<$10K) to 13 ($120K+); 6 ($50K-$59,999).

d

1 (definitely true) to 5 (definitely false).

e

Means and SDs shown are for untransformed scores on the Center for Epidemiologic Studies Depression Scale (CES-D), but the statistical results are based on log-transformed scores.