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Table 2 Cross-tabulations, sensitivity and specificity, of measured and self-reported BMI for all respondents, males and females, in SLÁN 2

From: Temporal trends in misclassification patterns of measured and self-report based body mass index categories - findings from three population surveys in Ireland

All Subjects

 

BMI Groups (Self-report)

 
  

Normal

Overweight

Obese

Totals

BMI Groups (Measured)

Normal

102 (96.2)*

4 (3.8)

0 (0)

106 (32)

Overweight

40 (28.8)

94 (67.6)

5 (3.6)

139 (42)

Obese

0 (0)

31 (36)

55 (64)

86 (26)

Totals

142

129

60

331 (100)

Specificity

82.2

81.8

98

 

Males

 

BMI Groups (Self-report)

 
  

Normal

Overweight

Obese

Totals

BMI Groups (Measured)

Normal

30 (100)

0 (0)

0 (0)

30 (20.4)

Overweight

20 (26.7)

55 (73.3)

0 (0)

75 (51)

Obese

0 (0)

17 (40.5)

25 (59.5)

42 (28.6)

Totals

50

72

25

147 (100)

Specificity

82.9

76.4

100

 

Females

 

BMI Groups (Self-report)

 
  

Normal

Overweight

Obese

Totals

BMI Groups (Measured)

Normal

72 (94.7)

4 (5.3)

0 (0)

76 (41.3)

Overweight

20 (31.2)

39 (60.9)

5 (7.8)

64 (34.8)

Obese

0 (0)

14 (31.8)

30 (68.2)

44 (23.9)

Totals

92

57

35

184 (100)

Specificity

81.5

85

96.4

 
  1. *Sensitivity for normal, overweight and obese categories is represented in parenthesis in bold figures.