Table 3. Diagnostic accuracy of UGAP and CAP for the diagnosis of steatosis grade.

	≥S1 (95% CI)		≥S2 (95% CI)		S3 (95% CI)
	UGAP	CAP	UGAP	CAP	UGAP	CAP
AUROC	0.891 * (0.837–0.945)	0.829 (0.775–0.903)	0.909 * (0.869–0.949)	0.832 (0.782–0.902)	0.924 ** (0.877–0.972)	0.801 (0.717–0.886)
Cut-off value	0.493	241	0.654	276	0.691	300
Sensitivity	0.791 (0.729–0.842)	0.627 (0.558–0.691)	0.842 (0.723–0.916)	0.807 (0.684–0.890)	0.882 (0.642–0.977)	0.765 (0.521–0.908)
Specificity	0.900 (0.684–0.982)	0.950 (0.743–1.000)	0.866 (0.804–0.910)	0.774 (0.704–0.832)	0.833 (0.776–0.878)	0.721 (0.655–0.778)
PPV	0.988 (0.970–1.000)	0.992 (0.977–1.000)	0.686 (0.577–0.794)	0.554 (0.447–0.661)	0.306 (0.177–0.435)	0.186 (0.095–0.277)
NPV	0.300 (0.184–0.416)	0.202 (0.121–0.283)	0.940 (0.903–0.978)	0.920 (0.875–0.965)	0.988 (0.972–1.000)	0.974 (0.948–0.999)
LR+	7.910 (2.120–29.515)	12.537 (1.850–84.946)	6.278 (4.188–9.410)	3.577 (2.622–4.880)	5.294 (3.721–7.532)	2.737 (1.941–3.859)
LR-	0.232 (0.171–0.315)	0.393 (0.320–0.482)	0.182 (0.100–0.333)	0.249 (0.146–0.426)	0.141 (0.038–0.520)	0.327 (0.138–0.773)

AUROC, area under receiver the operating curve; CAP, controlled attenuation parameter; CI: Confidence interval; LR+, positive likelihood ratio; LR–, negative likelihood ratio; NPV, negative predictive value; PPV, positive predictive value; UGAP, ultrasound-guided attenuation parameter.

* p < 0.05 (compared with CAP).

** p < 0.01 (compared with CAP).