Table 1.

Sample Characteristics of Cognitively Normal Older Controls (NCs) and Participants with Mild Cognitive Impairment (MCI)

Characteristic	NC n = 40	MCI n = 40
Age, mean ± SD (range)	72.3 ± 5.5 (60–82)	74.3 ± 7.5 (60–90)
Education, years, mean ± SD (range)	16.5 ± 2.5 (12–21)	15.8 ± 2.9 (12–21)
Wide Range Achievement Test-3 Reading, mean ± SD (range)*	54.6 ± 1.9 (50–57)	50.1 ± 5.6 (34–57)
Mini-Mental State Examination, mean ± SD (range)*	29.3 ± 0.9 (27–30)	27.8 ± 1.8 (22–30)
Female, %	60	48
White, %	83	78

^*Significant between-group difference, P<.001.

SD = standard deviation.