Table 2

Results of Cox regression in the subgroup of incident patients at baseline

Variables*	Univariate		Scaled univariate		P value	n
Variables*	HR	95% CI	HR	95% CI	P value	n
RVEDVI_%pred	1.003	1.000 to 1.006	1.139	0.982 to 1.321	0.086	361
RVESVI_%pred	1.001	1.000 to 1.002	1.162	1.013 to 1.334	0.032	361
VMI	0.598	0.374 to 0.957	0.842	0.719 to 0.985	0.032	357
RVEDVI_%pred:VMI	1.002	1.001 to 1.003	1.303	1.127 to 1.507	<0.001	356
RVESVI_%pred:VMI	1.001	1.001 to 1.002	1.354	1.194 to 1.536	<0.001	356
Bivariate Cox model of RVESVI_%pred and VMI	2.857	1.718 to 4.752	1.380	1.181 to 1.613	<0.001	356

*Congenital heart disease excluded from this group.
RVEDVI_%pred, right ventricular end-diastolic volume index percentage predicted; RVEDVI_%pred:VMI, ratio of right ventricular end-diastolic volume index percentage predicted to ventricular mass index; RVESVI_%pred, right ventricular end-systolic volume index percentage predicted; RVESVI_%pred:VMI, ratio of right ventricular end-systolic volume index percentage predicted to ventricular mass index; VMI, ventricular mass index.