Table 2.

Participant Characteristics at Baseline

Variable	Remained Normal (N=208)	Progressed to MCI or Dementia (N=60)
Age, mean years (SD)	55.4 (9.6)	62.4 (10.9)**
Gender, females (%)	63.0 %	56.7%
Education, mean years (SD)	17.3 (2.3)	16.6 (2.3)
Ethnicity, Caucasians (%)	98.6%	91.7%*
ApoE-4 carriers (%)	33.2%	45.8%
MMSE, mean score (SD)	29.6 (0.7)	29.4 (1.0)
NART, mean score (SD)	121.5 (6.5)	116.3 (10.0)*

Abbreviations: ApoE-4, apolipoprotein E-4; MMSE, Mini-Mental State Exam; NART, National Adult Reading Test

^*p = .02

^**p = .001