Table 4.

Changes in QoL elements and the VAS scale as univariate predictors of mortality following CRT

Mortality at 5 years	HR	95% CI	χ2	P-value
Mobility	0.25	0.12–0.53	13.53	<0.0001
Self-care	0.13	0.04–0.44	10.82	0.001
Usual activities	0.53	0.24–1.16	2.51	0.11
Pain/discomfort	0.48	0.21–1.09	3.03	0.08
Anxiety/depression	0.91	0.38–2.18	0.04	0.83
VAS 10% improvement	0.45	0.25–0.78	7.77	0.005

Hazard ratios refer to 1 SD increase.

CI, confidence interval; HR, hazard ratio; VAS, visual analogue scale; QoL, change was defined as one point increase in QoL elements and 10% improvement in VAS scale at 6 months predictive of 5  years of mortality during univariant Cox regression analysis; χ², Wald chi square.

P value lower than 0.05 was considered statistically significant.