Table 1.

Participant characteristics

	Clinical diagnosis			Total (531)	P
	Normal cognition (180)	Mild cognitive impairment (148)	Alzheimer’s disease (203)
Age of death, years	86 ± 7	89 ± 6	91 ± 6	89 ± 7	<0.001
Male, no. (%)	70 (39)	54 (36)	70 (34)	194 (37)	0.67
Non-Hispanic white, no. (%)	177 (98)	146 (99)	195 (96)	518 (98)	0.21
Education, years	17 ± 4	16 ± 3	17 ± 4	17 ± 4	0.59
Global cognition composite (at the last visit), z	0.14 ± 0.42	−0.49 ± 0.45	−1.85 ± 0.91	−0.80 ± 1.09	<0.001
Average number of visits	7.12 ± 4.04	6.93 ± 3.65	7.55 ± 3.69	7.23 ± 3.8	0.26

Boldface signifies p < 0.05