. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: Am Heart J. 2014 Oct 22;169(1):53–61.e1. doi: 10.1016/j.ahj.2014.10.009

Table 3.

Hazard ratios (95% confidence intervals) for the 10-year risk of atrial fibrillation for cohort participants according to P-wave indices, categorized using specified clinical cut-points.

	Framingham	ARIC
PR interval, >200 ms
Age- and sex-adjusted^*	1.24 (0.72-2.15)	1.37 (1.04-1.82)
Multivariable-adjusted^†	1.21 (0.69-2.11)	1.36 (1.02-1.81)
P-wave duration, >120 ms
Age- and sex-adjusted^*	1.70 (1.26-2.30)	1.71 (1.39-2.11)
Multivariable-adjusted^†	1.54 (1.13-2.11)	1.55 (1.25-1.93)
Maximum P-wave area, ≥95^th percentile
Age- and sex-adjusted^*	1.21 (0.69-2.12)	1.52 (1.05-2.21)
Multivariable-adjusted^†	1.21 (0.68-2.15)	1.35 (0.92-1.98)
P-wave terminal force, >4000 μV·ms
Age- and sex-adjusted^*	1.09 (0.78-1.52)	1.75 (1.39-2.20)
Multivariable-adjusted^†	1.00 (0.71-1.40)	1.56 (1.24-2.00)

Hazard ratios are for 10-year follow-up. Framingham indicates Framingham Heart Study; ARIC, Atherosclerosis Risk in Communities Study. Events and P-wave indices referent as described by text.

Includes adjustment for race in ARIC.

^†

Multivariable-adjusted for age, sex, race (in ARIC), current smoking, height, weight, systolic and diastolic blood pressures, heart rate, total/HDL cholesterol, ECG-based LVH, diabetes, history of myocardial infarction, and prevalent heart failure.