Table 4. Discrimination and reclassification improvement for incident CKD by FLI.

	Incident CKD
	Values	P-value
AUC (95% CI)
Traditional modela	0.816 (0.80~0.833)
Traditional modela+FLI	0.818 (0.802~0.835)	0.061b
NRI (95% CI)
Category-free NRI (% [95% CI])	17% (8.9 to 25%)	< 0.001
% of events correctly reclassified	-8%	0.036
% of non-events correctly reclassified	25%	< .0001
IDI (95% CI)	0.002 (0.0046–0.0143)	0.046

CKD, chronic kidney disease; FLI, fatty liver index; AUC, area under the curve; CI, confidence interval; NRI, net reclassification improvement; IDI, integrated discrimination improvement

^a Traditional model includes age, gender, baseline eGFR, smoking, regular exercise, alcohol intake, protein intake, systolic BP, DM, total cholesterol and log hsCRP

^b P-value (Traditional model vs. Traditional model + FLI)