Table 1.

Demographic characteristics by frequency of aspirin and nonaspirin NSAID use, NIH-AARP, 1996–2006

	Aspirin				Nonaspirin NSAIDs
	No use	≤2 times/wk	>2–6 times/wk	Daily +	No use	≤2 times/wk	>2–6 times/wk	Daily +
Cohort, n (%)	80,879 (26.7)	114,805 (38.0)	28,891 (9.5)	75,634 (25.0)	130,928 (43.2)	119,762 (39.6)	18,311 (6.1)	30,616 (10.1)
Median age (interquartile range)	63.5 (58.7–67.4)	62.4 (57.8–66.7)	63.5 (58.8–67.3)	64.7 (60.2–68.0)	64.5 (59.8–67.9)	62.3 (57.6–66.6)	62.4 (57.8–66.6)	63.8 (59.1–67.5)
Gender (% male)	46.9	57.4	62.3	70.8	62.0	59.2	48.5	46.0
Race (% white)	90.1	92.6	94.0	94.3	91.9	93.1	92.7	92.5
History of heart disease	9.7	4.7	10.2	33.3	15.9	11.4	11.5	14.9