Table 2 Intra and Inter-rater reliability of Questions 1 to 5 on the Charcot Radiological Staging Scale and the total score
Measure | Rater | Q1 Kappa (SEa) | Q2 Kappa (SEa) | Q3 Kappa (SEa) | Q4 Kappa (SEa) | Q5 Kappa (SEa) | Median total score (IQRb) | Total Score Kappa (SEa) |
|---|---|---|---|---|---|---|---|---|
Intra-rater | Novice Podiatrist | 0.84 (0.19) | 0.86 (0.20) | 0.44 (0.20) | 0.78 (0.20) | 0.73 (0.20) | 5 (3–6) | 0.84 (0.20) |
Expert Podiatrist | 0.49 (0.20) | 0.80 (0.20) | 0.58 (0.19) | 0.65 (0.19) | 0.86 (0.20) | 5 (4–6) | 0.86 (0.20) | |
Radiologist | 0.82 (0.19) | 0.87 (0.20) | 0.67 (0.20) | 0.58 (0.20) | 0.84 (0.20) | 4.5 (3–6) | 0.86 (0.20) | |
Inter-rater | Novice Podiatrist/ Expert Podiatrist | 0.61 (0.13) | 0.78 (0.14) | 0.32 (0.14) | 0.46 (0.14) | 0.79 (0.14) | 0.83 (0.14) | |
Novice Podiatrist/ Radiologist | 0.75 (0.14) | 0.77 (0.14) | 0.31 (0.14) | 0.09 (0.08) | 0.70 (0.14) | 0.72 (0.14) | ||
Expert Podiatrist/Radiologist | 0.58 (0.12) | 0.65 (0.14) | 0.36 (0.14) | 0.10 (0.06) | 0.74 (0.14) | 0.74 (0.14) |