Table 4 Intra-rater reliability
| Â | Mean Rater Day 1 | Mean Rater Day 2 | Mean Difference (95% CI) | Difference p-value (2-sided) | Concordance Correlation Coefficient (95% CI) | B-A Mean Difference (95% Limits of Agreement) |
|---|---|---|---|---|---|---|
Marker Method | ||||||
Flexion | Â | Â | Â | Â | Â | Â |
RF Day 1 v Day 2 | 91.5 | 91.9 | 0.5 (-0.1 to 1.1) | 0.13 | 0.997 (0.996 to 1.0) | 0.5 (-2.2 to 3.1) |
PT Day 1 v Day 2 | 90.1 | 90.4 | 0.3 (-0.2 to 0.8) | 0.24 | 0.998 (0.997 to 1.0) | 0.3 (-2.0 to 2.6) |
OS Day 1 v Day 2 | 90.8 | 89.7 | -1.1 (-2.9 to 0.6) | 0.19 | 0.981 (0.967 to 1.0) | -1.1 (-8.9 to 6.6) |
Extension | ||||||
RF Day 1 v Day 2 | 13.8 | 14.9 | 1.1 (-0.5 to 2.7) | 0.14 | 0.980 (0.966 to 0.995) | 1.1 (-2.9 to 5.1) |
PT Day 1 v Day 2 | 12.1 | 13.3 | 1.2 (0.0 to 2.4) | 0.05 | 0.983 (0.971 to 0.995) | 1.2 (-1.8 to 4.3) |
OS Day 1 v Day 2 | 12.8 | 14.1 | 1.3 (-1.6 to 4.2) | 0.32 | 0.941 (0.906 to 0.977) | 1.3 (-6.1 to 8.7) |
Line of Femur Method | ||||||
Flexion | ||||||
RF Day 1 v Day 2 | 92.1 | 93.0 | 0.9 (0.0 to 1.7) | 0.05 | 0.995 (0.992 to 0.999) | 0.9 (-2.9 to 4.6) |
PT Day 1 v Day 2 | 90.5 | 90.8 | 0.3 (-0.3 to 0.9) | 0.29 | 0.998 (0.997 to 1.0) | 0.3 (-2.2 to 2.8) |
OS Day 1 v Day 2 | 92.4 | 92.3 | -0.1 (-0.6 to 0.5) | 0.73 | 0.998 (0.997 to 1.0) | -0.1 (-2.5 to 2.3) |
Extension | ||||||
RF Day 1 v Day 2 | 15.0 | 16.4 | 1.4 (0.2 to 2.7) | 0.03 | 0.983 (0.971 to 0.995) | 1.4 (-1.7 to 4.6) |
PT Day 1 v Day 2 | 9.1 | 9.3 | 0.2 (-0.9 to 1.2) | 0.72 | 0.990 (0.983 to 0.997) | 0.7 (-2.5 to 2.9) |
OS Day 1 v Day 2 | 14.0 | 14.4 | 0.4 (-1.1 to 2.0) | 0.54 | 0.987 (0.978 to 0.996) | 0.4 (-3.6 to 4.5) |