Skip to main content

Table 2 Inter-rater reliability. Unweighted Kappa values, confidence interval (CI) and overall agreement (Po)in percentage for the three age groups separately.

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

   Age group I Age group II Age group III
Item S n Kappa (95% CI) Po % N Kappa (95%CI) Po% N Kappa(95%CI) Po %
1. Dorsiflexion 5 22 0.94 (0.81–1.00) 95 25 0.44 (0.16–0.71) 68 22 0.73 (0.5–0.96) 82
2. Plantarflexion 5 22 0.65 (0.34–0.96) 82 25 0.43 (0.14–0.71) 64 20 0.77 (0.35–1.00) 95
3. Subtalar 5 22 0.74 (0.54–0.95) 82 23 0.26 (-0.17–0.69) 68 22 0.71 (0.46–0.96) 82
4. Derotation 5 22 0.53 (0.30–0.76) 73 25 0.65 (0.02–1.00) 96 22 0.62 (0.32–0.93) 82
5. Adduktion 5 22 1.00 (0.00–0.00) 100 25 0.58 (0.23–0.92) 84 22 0.53 (0.21–0.84) 73
6. Tightness 4 22 0.66 (0.43–0.90) 77 23 0.41 (0.10–0.73) 84 21 0.85 (0.65–1.00) 90
7. Flx.dig.long 3 13 0.00 (0.00–0.00) 77 25 -0.06(-0.14–0.0)! 88 18 0.00 (0.00–0.00) ! 94
8. Flx.dig.hall. 3 13 0.00 (0.00–0.00) 85 25 0.83 (0.52–1.00) 96 18 0.00 (0.00–0.00) ! 94
9. M. Peroneus 3 22 0.58 (0.30–0.86) 73 25 0.54 (0.24–0.85) 76 22 0.57 (0.26–0.88) 72
10. M. ext.dig.ln 3 22 0.21 (0.02–0.40) 64 24 0.60 (0.21–0.99) 84 22 0.26 (-0.15–0.66) 72
11. M. sol/gastr. 3 20 0.52 (0.12–0.93) 80 21 0.00 (0.00–0.00) ! 81 22 0.00 (0.00–0.00)! 91
12. Tib.rotation 3 22 0.74 (0.40–1.00) 91 25 0.71 (0.41–1.00) 88 22 0.62 (0.16–1.00)! 91
13. Calc.pos. 3 22 0.78 (0.56–1.00) 86 21 -0.07(-0.2–0.04)! 84 22 0.43 (0.00–0.98) 86
14. Forefootpos. 3 22 0.82 (0.60–1.00) 82 21 0.63 (0.26–1.00) 86 19 0.41 (0.06–0.75) 68
15. Foot arch 3 22 1.00 100 21 0.00 (0.00–0.00) 95 21 0.43 (0.10–0.75) 81
16. Walking 4   n.a   24 0.71 (0.45–0.97) 83 22 0.64 (0.37–0.92) 77
17. Toe walking 4   n.a   12 0.60 (0.15–1.00) 83 22 0.38 (0.02–0.74) 68
18. Heelwalking 4   n.a   12 0.37 (0.06–0.68) 58 22 0.52 (0.23–0.81) 68
19. Squatting 4   n.a   18 0.50 (0.08–0.92) 78   n.a  
20. Running 4   n.a   18 0.67 (0.35–0.98) 83 22 0.13 (-0.21–0.47) 45
21. One legstand 4   n.a    n.a   22 0.66 (0.41–0.91) 77
22. Hop 1 leg 4   n.a    n.a   22 0.94 (0.82–1.00) 95
  1. S = amount of scales, n = number of feet assessed
  2. ! = limited variation of cell frequency
  3. n.a. = not applicable, due to age dependent activities.