Variation in risk factors of dementia among four elderly patient cohorts

Table 1 Clinical characteristics of dementia patients by race and gender cohorts

Variables	White males	White females	All white	Black males	Black female	All black	All dementia age 65+
	n = 1778	n = 3069	n = 9847	n = 253	n = 456	n = 709	n = 5556
Column→	1	2	3	4	5	6	7
Mean age (SD)	80.6 (8.4)	83.9 (9.0)	82.7 (9)	78.4 (8.8)	82.3 (9.4)	80.9 (9.4)	82.5 (9.1)
HTN (%)	81.8	83.1	82.6	85.8	91.71	89.62	83.5
DM (%)	38.1	30.6	33.4	47.2	52.61	50.62	35.6
Chol (%)	11.31	8.5	9.6	8.7	9.4	9.2	9.5
CA (%)	42.41	36.3	38.61	35.6	32.5	33.6	37.9
MI (%)	7.6	5.3	6.2	7.91	5.7	6.5	6.2
CHF (%)	36.71	32.6	34.0	32.4	36.2	34.8	34.2
Stroke (%)	63.1	54.9	57.9	72.71	63.4	66.71	59.0
Dementia (%)	3.1	3.8	3.5	4.1	4.21	4.21	3.6

¹Differences across cohorts significant at P < 0.001;

²Differences between two racial groups (cols. 3 and 6) are significant at P < 0.001. HTN: Hypertension; DM: Diabetes mellitus; Chol: Hyperlipidemia; CA: Cardiac arrhythmia; MI: Myocardial infarction; CHF: Congestive heart failure; Stroke: Prior stroke.