. Author manuscript; available in PMC: 2012 May 1.

Published in final edited form as: Circ Cardiovasc Qual Outcomes. 2011 Apr 12;4(3):321–327. doi: 10.1161/CIRCOUTCOMES.110.951442

Table 3.

Risk of incident atrial fibrillation according to the United States government’s recommended level of weekly physical activity.

	Cumulative Average Physical Activity Level (MET-hours/week)		P
	<7.5	7.5+	P
Model 1 Hazard Ratio (95% CI)	1.0	0.86(0.75–0.98)	0.03
Model 2 Hazard Ratio (95% CI)	1.0	0.89 (0.78–1.02)	0.09
Model 3 Hazard Ratio (95% CI)	1.0	0.96 (0.84–1.10)	0.57
Model 4 Hazard Ratio (95% CI)	1.0	0.97 (0.84–1.11)	0.65

Model 1: Age, randomized treatment, cholesterol, current smoking, past smoking, alcohol, diabetes, and race adjusted

Model 2: Model 1plus hypertension

Model 3: Model 1plus body mass index (kg/m2)

Model 4: Model 1plus hypertension and body mass index

Abbreviations: AF, atrial fibrillation; CI, confidence interval; CVD, cardiovascular disease; MET, metabolic equivalent task.