Table 2.

Levels of sensibility, specificity, PPV and NPV for the ultrasound in the diagnosis of hepatic steatosis by body mass index (BMI) values

Variables	35.0 kg/m2 ≤ BMI ≤ 40 kg/m2		BMI ≥ 40 kg/m2
	Value (%)	95% CI	Value (%)	95% CI
Sensibility	65	40.9-83.7	64.4	52.2-75.0
Specificity	75	21.9-98.7	100	56.1-100
PPV	92.9	64.2-99.6	100	90.6-100
NPV	30	8.1-64.6	21.2	9.6-39.4

PPV: Positive predictive value; NPV: Negative predictive value; 95% CI: Confidence interval of 95%.