Table 5

Prevalences (%) of overweight, obesity and increased WC based on measured and self-reported values for sex, age, BMI status, SES, smoking status, medication use and frequency of weighing oneself

Males (N = 864)

Females (N = 434)

Overweight measured

68.1

62.9

Overweight self-reported

72.2

64.7

Obesity measured

31.9

37.1

Obesity self-reported

25.1

30.2

Increased WC measured1

56.8

73.0

Increased WC self-reported1

60.2

77.0


Low age (N = 649)

High age (N = 649)

Overweight measured

64.4

68.3

Overweight self-reported

66.3

73.2

Obesity measured

35.6

31.7

Obesity self-reported

29.1

24.5

Increased WC measured1

59.2

64.0

Increased WC self-reported1

66.4

64.0


Overweight (N = 861)

Obese (N = 437)

Overweight measured

100.0

0.0

Overweight self-reported2

93.5

22.9

Obesity measured

0.0

100.0

Obesity self-reported

1.3

77.1

Increased WC measured1

44.2

94.3

Increased WC self-reported1

49.7

94.3


Low SES (N = 513)

High SES (N = 784)

Overweight measured

61.0

69.8

Overweight self-reported

66.7

71.7

Obesity measured

39.0

30.2

Obesity self-reported

31.2

24.0

Increased WC measured1

68.7

57.0

Increased WC self-reported1

68.7

62.9


Smoking (N = 193)

Non-smoking (N = 1103)

Overweight measured

59.6

67.5

Overweight self-reported

63.7

70.9

Obesity measured

40.4

32.5

Obesity self-reported

34.7

25.4

Increased WC measured1

41.7

39.2

Increased WC self-reported1

47.2

41.0


Medication use (N = 218)

No medication use (N = 1031)

Overweight measured

54.6

69.0

Overweight self-reported

61.5

71.5

Obesity measured

45.4

31.0

Obesity self-reported

36.7

24.5

Increased WC measured1

60.6

36.8

Increased WC self-reported1

54.5

40.7


Low frequency of weighing oneself (N = 671)

High frequency of weighing oneself (N = 627)

Overweight measured

63.9

68.9

Overweight self-reported

69.4

70.0

Obesity measured

36.1

31.1

Obesity self-reported

28.0

25.5

Increased WC measured1

51.2

27.6

Increased WC self-reported1

52.0

31.7


1 Results on WC are based on a sub-sample of 250 subjects (176 males and 74 females; low age group [N = 125], high age group [N = 125]; low BMI group [N = 163], high BMI group [N = 87]; low SES group [N = 99], high SES group [N = 151]; smoking [N = 36], non-smoking [N = 212]; medication use [N = 33], no medication use [N = 209]; low frequency of weighing [125], high frequency of weighing [123]).

2 45 subjects (5.2%) had a healthy weight based on their self-reported BMI

Dekkers et al. BMC Medical Research Methodology 2008 8:69   doi:10.1186/1471-2288-8-69

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