Table 3.

Association between nomogram scores and NAFLD.

	Low risk (score <180)	Moderate (score 180–340)	High risk (score > 340)
Training set
Median (interquartile range)	107 (69–145)	256 (221–295)	392 (364–427)
Total, n (%)	472 (38.6)	506 (41.4)	245 (20.0)
NAFLD, n (%)	4 (0.8)	95 (18.8)	186 (75.9)
Sensitivity (%)	98.60 (97.22–99.97)		65.26 (59.70–70.82)
Specificity (%)	49.89 (46.69–53.10)		93.71 (92.15–95.27)
Positive predictive value (%)	-		75.92 (70.53–81.31)
Negative predictive value (%)	99.15 (98.32–99.98)		-
Validation set
Median (interquartile range)	103 (67–138)	260 (217–302)	389 (369–422)
Total, n (%)	456 (37.3)	508 (41.5)	259 (21.2)
NAFLD, n (%)	13 (2.9)	118 (23.2)	158 (61.0)
Sensitivity (%)	95.50 (93.10–97.91)		54.67 (48.90–60.44)
Specificity (%)	47.43 (44.22–50.64)		89.19 (87.19–91.18)
Positive predictive value (%)	-		61.00 (55.02–66.98)
Negative predictive value (%)	97.15 (95.62–98.68)		-