The Association between the PR Interval and Left Ventricular Measurements in the Multiethnic Study of Atherosclerosis

Table 4

Multivariable adjusted differences in LV measures and ejection fraction by presence of a prolonged PR interval (>200 ms) versus PR interval 120–200 ms.

LV measures	Model 1; β (95% CI)	Model 2; β (95% CI)	Model 3; β (95% CI)
LV mass (g)	7.17 (4.41, 9.94)	6.13 (3.38, 8.89)	5.51 (2.89, 8.13)
LV mass index (g/m^2)	3.57 (2.11, 5.03)	2.91 (1.45, 4.36)	2.56 (1.18, 3.94)
LV end-systolic volume (mL)	2.55 (1.09, 4.01)	2.56 (1.09, 4.04)	2.72 (1.25, 4.20)
LV end-diastolic volume (mL)	8.21 (5.69, 10.73)	6.93 (4.46, 9.41)	6.80 (4.32, 9.28)
LV stroke volume (mL)	5.67 (3.94, 7.39)	4.37 (2.71, 6.03)	4.07 (2.41, 5.72)
LV ejection fraction (%)	0.14 (−0.57, 0.85)	−0.12 (−0.83, 0.59)	−0.26 (−0.97, 0.45)

Model 1 adjusted for age, sex, race, height, and weight. Model 2 adds heart rate and site to Model 1.  Model 3 adds systolic blood pressure, use of antihypertensive medications, current smoking status, and diabetes to Model 2.
LV mass indexed for body surface area [16].