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Table 5 Sensitivity, specificity, positive predictive value and negative predictive value of self-reported BMI classificationsa by sex

From: Validity of self-reported weight and height: a cross-sectional study among Malaysian adolescents

 

All

Boys

Girls

Self-reported

BMI

Sn (%)

Sp (%)

PPV (%)

NPV (%)

Sn (%)

Sp (%)

PPV (%)

NPV (%)

Sn (%)

Sp (%)

PPV (%)

NPV (%)

Underweight

77.5

94.7

48.4

98.5

81.8

91.4

42.9

98.5

72.2

97.4

59.1

98.5

Normal weight

90.6

83.0

94.2

74.5

86.3

84.0

94.2

67.0

94.1

82.2

94.1

82.2

Overweight

75.3

96.2

73.5

96.6

72.7

96.3

70.6

96.6

77.1

96.2

75.5

96.5

Obesity

75.0

99.4

89.2

98.2

80.0

99.3

88.9

98.6

70.8

99.4

89.5

98.0

  1. Sn sensitivity, Sp specificity, PPV positive predictive value, NPV Negative predictive value
  2. aWHO Growth Reference, 5–19 years (2007)