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Details of reliability study between Cobbs’ angle measurements performed on 30 × 90 cm radiographs and small radiographs
| Cobbs’ angle difference (degrees) | Paired t-test | Spearman rank correlation | Intraclass correlation coefficient | |
|---|---|---|---|---|
| N | 640 | 640 | 640 | 640 |
| Minimum | 0 | |||
| Maximum | 19.00 | |||
| Mean | 2.8141 | |||
| SD deviation | 2.61537 | |||
| T value | 0.935 | |||
| R value | 0.935 | |||
| Significance | <0.0001 | <0.0001 | ||
| ICC | 0.966 | |||
| 95% Confidence interval | ||||
| Lower bound | 0.961 | |||
| Upper bound | 0.971 | |||
