Table 2.

Adjusted¹ hazard ratios (95% confidence intervals) for incident cardiovascular disease by American Heart Association physical activity categories², ARIC, 1987–2008.

	Poor physical activity		Intermediate physical activity		Recommended physical activity
	# of events	Hazard ratios	# of events	Hazard ratios	# of events	Hazard ratios	Ptrend*
Cardiovascular disease incidence
African Americans	560	1.00	304	0.65 (0.56, 0.75)	175	0.59 (0.49, 0.71)	<.0001
Caucasians	525	1.00	721	0.74 (0.66, 0.83)	746	0.67 (0.59, 0.75)	<.0001
Stroke incidence
African Americans	188	1.00	96	0.65 (0.50, 0.83)	66	0.72 (0.53, 0.98)	0.006
Caucasians	116	1.00	168	0.76 (0.60, 0.97)	196	0.78 (0.61, 0.99)	0.08
Heart failure incidence
African Americans	350	1.00	178	0.62 (0.51, 0.75)	105	0.59 (0.47, 0.74)	<.0001
Caucasians	303	1.00	414	0.76 (0.65, 0.88)	398	0.64 (0.54, 0.75)	<.0001
Coronary heart disease incidence
African Americans	271	1.00	114	0.59 (0.47, 0.75)	80	0.66 (0.50, 0.86)	<.0001
Caucasians	248	1.00	357	0.76 (0.65, 0.90)	366	0.68 (0.58, 0.80)	<.0001

¹Adjusted for age, sex, smoking, alcohol intake, hormone therapy use, education, and `Western' and `Prudent' dietary pattern scores.

²See table 1 for physical activity category definitions.

^*Trend across physical activity categories.