Skip to main content

Table 4 Errors in the classification of BMI categories and WC categories based on self-reported anthropometrics in Jiangsu, China (%)

From: Accuracy of self-reported height, weight, and waist circumference in a general adult Chinese population

Categories

SR

DM

Absolute Error

Relative Error

Men

Women

All

Men

Women

All

Men

Women

All

Men

Women

All

BMI categories (kg/m2, according to the Chinese standard)

  < 18.5

2.9

3.7

3.3

2.3

2.4

2.3

0.6

1.3

1.0

27.0

56.1

42.6

 18.5–23.9

45.9

51.4

48.8

43.5

43.3

43.4

2.4

8.1

5.4

5.6

18.7

12.5

 24.0–27.9

38.6

34.6

36.5

40.0

38.3

39.1

−1.4

−3.7

−2.6

−3.5

−9.7

−6.5

  ≥ 28.0

12.5

10.3

11.4

14.2

16.0

15.2

−1.6

−5.7

−3.9

−11.6

−35.8

−25.5

WC categories (cm, according to the IDF standard for Chinese)

  < 90 of men/ <80 of women

64.4

51.3

56.4

66.1

41.8

52.3

−1.7

9.5

4.2

−2.6

22.6

8.0

  ≥ 90 of men/ ≥80 of women

35.6

48.7

43.6

33.9

58.2

47.7

1.7

−9.5

−4.2

5.1

−16.3

−8.7

BMI categories (kg/m2, according to the WHO standard)

  < 18.5

3.0

5.2

4.0

2.5

4.7

3.6

0.5

0.4

0.4

20.5

9.5

11.6

 18.5–24.9

61.6

69.9

65.5

57.3

60.4

58.8

4.3

9.5

6.7

7.6

15.7

11.4

 25.0–29.9

29.4

21.3

25.6

33.7

29.1

31.4

−4.3

−7.8

−5.8

−12.7

−26.8

−18.5

  ≥ 30.0

6.0

3.7

4.9

6.6

5.8

6.2

−0.6

−2.1

−1.3

−9.0

−36.7

−21.0

WC categories (cm, according to the IDF standard for Americans)

  < 102 of men/ <88 of women

95.7

82.4

88.6

95.2

79.3

87.2

0.4

3.1

1.4

0.5

3.9

1.6

  ≥ 102 of men/ ≥88 of women

4.3

17.6

11.4

4.8

20.7

12.8

−0.4

−3.1

−1.4

−9.2

−15.0

−10.6

  1. Abbreviations: BMI body mass index, WC waist circumference, SR self-reported, DM directly measured; Absolute error = SR-DM, Relative error = Absolute error/DM*100, WHO World Health Organization, IDF International Diabetes Federation