. Author manuscript; available in PMC: 2009 Jun 22.

Published in final edited form as: Postgrad Med. 2009 Mar;121(2):177–185. doi: 10.3810/pgm.2009.03.1990

Table 1.

Demographic Characteristics of the Total Group, PCP and Community Samples, and the Normal and MCI Subgroups

	Total Group n = 524 (100%)	PCP n = 323 (61.6%)	Community n = 201 (38.4%)	Normal n = 296 (56.5%)	MCI n = 228 (43.5%)
Age, years	73.30	72.71	74.24	71.84	75.18
(Mean SD)	(6.52)	(5.96)	(7.25)^a	(5.95)	(6.76)^a
Education, years	13.46	13.81	12.90	13.74	13.10
(Mean SD)	(2.67)	(2.82)	(2.31)^a	(2.69)	(2.61)^a
Gender (% male)	34.9	39.6	27.4	32.8	37.7
Race (% white)	94.3	97.8	88.6	95.9	92.1
MMSE score	28.12	28.13	28.09	28.67	27.41
Mean (SD)	(1.66)	(1.76)	(1.48)	(1.39)	(1.71)^a

Abbreviations: MCI, mild cognitive impairment; MMSE, Mini Mental State Examination; PCP, primary care physician; SD, standard deviation.

Significant at the P < 0.01 level.