Table 2:

Association between quartiles of coupling interval heterogeneity and change in LVEF

Variable	Unadjusted OR	95% CI	p-value	Adjusted OR*	95% CI	p-value
Quartile 1		Reference			Reference
Quartile 2	2.05	0.46 to 9.04	0.68	1.72	0.34 to 8.58	0.51
Quartile 3	2.2	0.52 to 9.29	0.81	1.78	0.38 to 8.45	0.47
Quartile 4	7.64	2.04 to 28.6	0.0004	7.92	1.84 to 34.0	0.005
Test of Trend			0.005			0.009

^*Adjusted for age, gender, race, body mass index, history of diabetes, hypertension, myocardial infarction, smoking, PVC frequency, PVC duration, and coupling interval duration