Table 4.

The value that METS-IR improved risk stratification of NAFLD according to C-index, NRI, and IDI.

	C-index		NRI (category free)		IDI
	Est. (95% CI)	P value	Est. (95% CI)	P value	Est. (95% CI)	P value
Clinical risk factors	0.719 (0.707, 0.731)		Ref.		Ref.
Clinical risk factors+METS-IR	0.771 (0.761, 0.781)	<0.001	0.276 (0.247, 0.303)	<0.001	0.068 (0.057, 0.080)	<0.001

Clinical risk factors: BMI, FPG, TC, TG, HDL-C, LDL-C, and GGT. Abbreviations: IDI: integrated discrimination improvement; NRI: net reclassification index. Other abbreviations as in Tables 1 and 2.