Table 2.

The validity of overweight and obesity classification by measured BMI and self-reported BMI measured by several diagnostic indices.

Diagnostic Indices	Measured BMI	Self-Reported BMI	p-Value of Difference *
Sensitivity	82% (CI 75–87%)	66% (CI 58–73%)	<0.001
Specificity	90% (CI 87–92%)	92% (CI 89–94%)	0.058
PPV	67% (CI 60–73%)	67% (CI 58–74%)
NPV	95% (CI 93–97%)	91% (CI 87–93%)

Note: BMI—Body Mass Index; PPV—positive predictive value; NPV—negative predictive value; CI—95% confidence interval; * based on McNemar’s test.