TABLE 1

Subject Demographics

Group	MMSE	Sex	Study*
Control subjects
C-1	30	F	Test
C-2	30	M	Test–retest (18)
C-3	30	F	Test–retest (8)
C-4	28	M	Test
C-5	29	F	Test
C-6	29	F	Test
C-7	30	M	Test–retest (21)
C-8	30	F	Test–retest (19)
Mean age (y): 65 ± 16 (72, 83, 70, 45, 39, 69, 76, 65)^†
MCI patients
M-1	24	M	Test–retest (20)
M-2	29	M	Test
M-3	23	M	Test
M-4	27	M	Test
M-5	28	M	Test
M-6	29	M	Test
M-7	29	M	Test
M-8	27	M	Test
M-9	29	F	Test
M-10	29	F	Test
Mean age (y): 72 ± 9 (74, 62, 80, 79, 65, 55, 74, 82, 77, 67)^†
AD patients
A-1	18	M	Test–retest (18)
A-2	26	M	Test–retest (19)
A-3	26	M	Test
A-4	25	M	Test
A-5	26	M	Test
A-6	25	M	Test–retest (28)
Mean age (y): 67 ± 10 (63, 73, 57, 77, 75, 58)^†

MMSE = Mini-Mental State Examination.
↵* Eight subjects underwent a retest PIB PET study within 28 d of test or baseline study. Time interval (d) between scans is in parentheses.
↵^† Individual ages are in parentheses. Ages are not listed in order of subject identification to preserve anonymity.