Table 3.

Comparing the performances among models for predicting 2- and 5-year ESRD development in patients with CKD stages G3-G5 using IDI and NRI.

Models	IDI (95% CI)	P-value	Continuous NRI (95% CI)	P-value
2-year risk prediction
6-variable vs 8-variable	− 0.016 (− 0.025, − 0.008)	< 0.01	− 0.331 (− 0.364, − 0.272)	< 0.01
4-variable vs 8-variable	− 0.016 (− 0.024, − 0.010)	< 0.01	− 0.330 (− 0.365, − 0.299)	< 0.01
4-variable vs 6-variable	0.000 (− 0.001, 0.002)	0.81	− 0.186 (− 0.281, 0.182)	0.46
5-year risk prediction
6-variable vs 8-variable	− 0.012 (− 0.019, − 0.006)	< 0.01	− 0.317 (− 0.375, − 0.262)	< 0.01
4-variable vs 8-variable	− 0.011 (− 0.017, − 0.006)	< 0.01	− 0.322 (− 0.367, − 0.272)	< 0.01
4-variable vs 6-variable	0.000 (− 0.001, 0.001)	0.75	0.165 (− 0.067, 0.253)	0.24

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