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Interobserver variability analysis of Cobb angle measurements
| MAD (Observer 1) |
MAD (Observer 2) |
MAD (Observer 3) | MAD (Observer 4) | SD | |||
|---|---|---|---|---|---|---|---|
| Preoperative standing Cobb angle (°) | 2.4 | 4.5 | 2.1 | 2.9 | 4.9 | ||
| Preoperative supine Cobb angle (°) | 4.8 | 6.9 | 5.3 | 4.0 | 6.0 | ||
| Postoperative standing Cobb angle(°) | 1.8 | 3.1 | 2.6 | 2.0 | 3.1 | ||
SD Standard deviation, MAD Mean absolute difference
