Table 4. Sex-specific differences in C-indexes regarding predictive power for all-cause mortality.

		C-index	P-value	P-value between models
Men	Model A	0. 65 (0.62 to 0.67)	<0.01	0.56
	Model A+CKD	0.64 (0.62 to 0.67)	<0.01
Women	Model A	0.60 (0.57 to 0.63)	<0.01	0.02
	Model A+CKD	0. 62 (0.59 to 0.65)	<0.01

Discriminating power was assessed using C-statistics.

Model A was adjusted for a body shape index (+1SD), age (+1SD), systolic blood pressure (+1SD), high-density lipoprotein cholesterol (+1SD), glycated hemoglobin (+1SD), estimated glomerular filtration rate (+1SD), drug use (anti-hypertension, anti-diabetes, or anti-dyslipidemia), past history of cardiovascular disease, and current smoking status (smoker).

Abbreviations: CKD, chronic kidney disease; SD, standard deviation