Table 1.

Cox regression models predicting mortality

Predictors	Hazard Ratio	p	95%	Conf. Interval
Univariate Cox model
Age (months)	1.18	<0.001	1.11	1.26
Male vs. female	1.20	0.46	0.74	1.94
MPI* (0.1 unit)	1.35	<0.001	1.16	1.58
LVMI† (mg/g)	1.44	0.002	1.15	1.80
Multivariate Cox model 1
Age (months)	1.15	<0.001	1.07	1.23
MPI* (0.1 unit)	1.26	0.005	1.07	1.48
LVMI† (mg/g)	1.12	0.41	0.86	1.45
Multivariate Cox model 2
Age (months)	1.16	<0.001	1.09	1.24
Cardiac aging score T2‡	1.80	0.067	0.96	3.39
Cardiac aging score T3‡	2.88	0.003	1.43	5.82

^*The hazard ratio (HR) rises by a factor of 1.35 for every 0.1 unit difference in MPI

^†HRs associated with LVMI are calculated as for MPI.

^‡Cardiac aging risk score = ß2 MPI + ß3 LVMI, calculated from the multivariate Cox model 1, and presented as middle (T2) or high (T3) vs. lower (T1) tertiles.