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Table 3 Agreement between the five questionnaire definitions and the primary physical examination definition

From: Agreement between a self-administered questionnaire on musculoskeletal disorders of the neck-shoulder region and a physical examination

Questionnaire definitions

Global agreement

Agreement among cases(1)

Agreement among non-cases(2)

Sn

Sp

 

Kappa

95% CI

%

%

%

%

%

1. Primary (n = 187)(3)

0.44

0.31–0.56

72

79

66

66

79

2. Limitations in activities of daily living (n = 153)(3)

0.38

0.25–0.52

69

84

64

47

91

3. Limitations in work activities (n = 128)(3)

0.19

0.08–0.30

63

92

59

19

99

4. Limitations in household activities (n = 135)(3)

0.29

0.17–0.42

66

95

61

30

99

5. Limitations in leisure activities (n = 138)(3)

0.27

0.14–0.40

65

83

61

31

95

  1. Abbreviations: Sn = sensitivity; Sp = specificity
  2. (1) Cases based on questionnaire definition. Agreement among cases corresponds to the positive predictive value.
  3. (2) Non-cases based on questionnaire definition. Agreement among non-cases corresponds to the negative predictive value.
  4. (3) N of workers vary because of the requirements of each definition