Table 3. Regression coefficients and hazard ratios for variables in the risk prediction model at CKD stage 3 patients.

	Training set
	Regression coefficient	SE	HR	95% CI for HR		p value
				Lower	Higher
Age (years)	–0.024***	0.06	0.98	0.97	0.99	<0.001
Sex (male)	–0.424**	0.14	0.65	0.50	0.86	0.002
DM	0.527***	0.14	1.69	1.28	2.24	<0.001
PKD	1.068	0.62	2.91	0.89	9.56	0.079
Serum albumin	–0.976***	0.14	0.38	0.29	0.50	<0.001
Serum hemoglobin	–0.078	0.05	0.93	0.85	1.01	0.093
Serum phosphorus	0.422***	0.10	1.53	1.24	1.87	<0.001
Serum potassium	0.217	0.15	1.24	0.93	1.65	NS
eGFR(CKD-EPI)	–0.050***	0.01	0.95	0.94	0.96	<0.001
Urine protein, 1+	1.085***	0.27	2.96	1.73	5.07	<0.001
Urine protein, 2+	1.253***	0.24	3.50	2.18	5.62	<0.001
Urine protein, 3+	1.289***	0.26	3.63	2.19	6.02	<0.001
Urine protein, 4+	1.520***	0.36	4.57	2.27	9.22	<0.001

Note. R² = 0.330, p <0.001.

HR = hazard ratio, CI = confidence interval.

*p<0.05

**p<0.01

***p<0.001, p value above 0.10 replaced with “NS”(not significant).