Table 5.

IDI and NRI (original vs recalibration) for predicting 2- and 5-year ESRD development in patients with CKD stages G3–G5.

Model	IDI (95% CI)	P-value	Continuous NRI (95% CI)	P-value
2-year risk prediction
8-variable	0.025 (0.016, 0.035)	< 0.01	0.317 (0.294, 0.348)	< 0.01
6-variable	0.019 (0.010, 0.027)	< 0.01	0.310 (0.284, 0.334)	< 0.01
4-variable	0.017 (0.006, 0.025)	< 0.01	0.303 (0.272, 0.327)	< 0.01
5-year risk prediction
8-variable	0.007 (0.003, 0.013)	< 0.01	0.155 (0.133, 0.185)	< 0.01
6-variable	− 0.010 (− 0.012, − 0.007)	< 0.01	− 0.251 (− 0.282, − 0.222)	< 0.01
4-variable	− 0.007 (− 0.008, − 0.005)	< 0.01	− 0.245 (− 0.272, − 0.217)	< 0.01

IDI Integrated Discrimination Index, NRI net reclassification improvement, ESRD end-stage renal disease, CKD chronic kidney disease.