Table 3

Performance of self-reported BMI, self-reported BMI using the new cut-offs and the predictive regression model in the validation sample

Self reported BMI

Using the new cut-offs

Regression model


% correctly classified (95% CI)

76.2% (73.4-78.9)

82.5% (79.9-84.8)

84.6% (82.2-86.8)

Weighted kappa (95% CI)

0.79 (0.77-0.82)

0.85 (0.82-0.87)

0.86 (0.84-0.88)

ROC Area Obesity (95% CI)

0.87 (0.84-0.89)

0.91 (0.89-0.93)

0.92 (0.89-0.94)

ROC Area Overweight (95% CI)

0.87 (0.85-0.89)

0.91 (0.89-0.93)

0.90 (0.88-0.92)


Isidoro et al. BMC Public Health 2011 11:960   doi:10.1186/1471-2458-11-960

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