Skip to main content

Table 1 Inter- and intra reliability. Unweighted Kappa values, confidence interval (CI) and overall agreement (Po) for the inter- and intra rater reliability tests and age interval 0 – 7 years.

From: The clubfoot assessment protocol (CAP); description and reliability of a structured multi-level instrument for follow-up

  

Inter-rater

Intra-rater

Item

S

n

Kappa (95% CI))

Po (%)

n

Kappa (95% CI)

Po (%)

1. Dorsiflexion

5

69

0.73 (0.60–0.86)

85

32

0.72 (0.50–0.94)

84

2. Plantarflexion

5

67

0.62 (0.45–0.79)

79

32

0.66 (0.41–0.91)

66

3. Subtalar

5

67

0.65 (0.49–0.79)

79

32

0.83 (0.66–1.00)

91

4. Derotation

5

69

0.62 (0.45–0.79)

84

32

0.93 (0.76–1.10)

97

5. Adduktion

5

69

0.71 (0.54–0.88)

85

32

0.94 (0.83–1.05)

97

6. Tightness

4

66

0.68 (0.53–0.83)

80

32

0.61 (0.35–0.87)

78

7. Flx.dig.long

3

56

-0.03 (-0.09–0.03) !

87

32

0.72 (0.36–1.08)

94

8. Flx.dig.hall.

3

56

0.57 (0.20–0.94) !

93

32

0.54 (0.27–0.81)

81

9. M. Peroneus

3

69

0.60 (0.44–0.76)

75

26

0.63 (0.34–9.92)

94

10. M. ext.dig.lgn

3

68

0.36 (0.16–0.56)

75

28

1.00

100

11. M. sol/gastr.

3

63

0.35 (0.05–0.60)

84

24

1.00

100

12. Tib.rotation

3

69

0.70 (0.50–0.90)

90

31

0.84 (0.63–1.00)

94

13. Calc.pos.

3

65

0.63 (0.43–0.83)

85

32

0.80 (0.53–1.00)

94

14. Forefootpos.

3

62

0.63 (0.44–0.82)

82

32

0.82 (0.63–1.00)

91

15. Foot arch

3

64

0.5 (0.30–0.86) !

92

31

1.00

100

16. Walking

4

46

0.68 (0.50–0.86)

80

27

0.81 (0.63–0.99)

89

17. Toe walking

4

34

0.49 (0.21–0.77)

73

15

0.61 (0.27–0.95)

80

18. Heelwalking

4

34

0.47 (0.23–0.71)

65

15

0.79 (0.52–1.00)

87

19. Squatting

4

19

0.56 (0.18–0.94)

79

19

0.80 (0.54–1.00)

89

20. Running

4

40

0.38 (0.14–0.62)

62

27

0.78 (0.59–0.97)

85

21. One legstand

4

22

0.70 (0.45–0.95)

77

9

0.68 (0.28–1.00)

77

22. Hop 1 leg

4

22

0.94 (0.82–1.06)

95

9

0.70 (0.33–1.07)

77

  1. S = amount of scales, n = number of feet assessed
  2. ! = limited variation of cell frequency