. 2015 Nov;12(6):647–654. doi: 10.11909/j.issn.1671-5411.2015.06.001

Table 5. RDW, mortality and survival time in the three groups, and ROC curve analysis.

Cause of heart failure (n)	Mortality (%)	RDW (%)	Survival time (day)	ROC curve analysis
Cause of heart failure (n)	Mortality (%)	M (Q1, Q3)	M (Q1, Q3)	AUC	P-value	AUC 95% CI
CHD (503)	11.7	13.1 (12.6, 13.8)	726.0 (495.0, 882)	0.704	< 0.001	0.609−0.799
VHD (155)	19.4	14.0 (13.4, 15.3)**	657.0 (444.0, 864.0)*	0.593	0.168	0.462−0.724
DCM (155)	23.2	13.9 (13.0, 14.9)**	628.0 (412.0, 852.0)**	0.753	< 0.001	0.647−0.860
P-value	0.001	< 0.001	0.005	> 0.05a	—	—

*P < 0.05, **P < 0.01; A P-values of AUC are calculated by comparison between CHD and DCM. AUC: area under the curve; CHD: coronary heart disease; DCM: dilated cardiomyopathy; ROC: receiver operator characteristic; VHD: valvular heart disease.