Table 1.

Participant Characteristics

	Non-converters n=69	Converters n=69
Age, years	75±7	75±7
Sex, % female	26	30
Race, % White	91	93
Education, years	16±3	17±3
APOE4, % carrier	43%	64%
Baseline MMSE	27±2	27±2
36-month MMSE*	26±5	21±5
Baseline Logical Memory Delayed Recall*	4.5±2.6	2.8±2.4
36-month Logical Memory Delayed Recall*	6.0±5.5	1.1±2.4
Baseline ICV-corrected hippocampal volume**	0.42±0.08	0.38±0.06
Cortical thickness	2.12±0.12	2.08±0.13
Gray matter intensity	73.8±2.3	74.0±2.1
White matter intensity	103.9±0.9	103.8±1.1
GWR*	27.2±2.1	26.5±1.6

Note. Data presented as M±SD or percentage; MMSE=Mini-Mental State Examination; ICV=intracranial volume corrected;

^*=p<0.01 difference between groups;

^**=p<0.001 difference between groups