TABLE 1.

Demographics and clinical variables by gender.

Variables	Males (n = 152)	Females (n = 76)	P-values
Age, years	75.3 ± 7.03	74.3 ± 7.04	0.33
Education, years	15.8 ± 2.92	15.7 ± 2.86	0.81
APOE4 carriers, n (%)	75 (49.3)	35 (46.1)	0.64
MMSE	27.3 ± 1.7	27.4 ± 1.81	0.62
FDG SUVRs	1.21 ± 0.13	1.21 ± 0.14	0.79
Plasma total testosteroneb (log10-transformed), ng/ml	0.43 ± 0.19	−0.36 ± 0.37	<0.001
The number of subjects at each visit pointa
Baseline	152	76
0.5	142	70
1	128	68
1.5	101	51
2	106	58
3	89	43
4	47	32
5	36	15
6	27	20
7	21	11
8	2	4
10	2	4
11	3	5
12	1	1

MMSE, Mini-Mental State Examination; FDG SUVRs, fluorodeoxyglucose standardized uptake value ratios. ^aParticipants who had FDG-PET measured were included. ^bThe non-transformed mean values for males and females were 2.94 ± 1 (mean ± SD) ng/ml and 0.57 ± 0.36 ng/ml, respectively.