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Spearman’s correlation matrix between lateral radiographs for ASI*
| ASI | Supine | Standing | Sitting | |||
|---|---|---|---|---|---|---|
| r | p | r | p | r | p | |
| Supine | 1 | – | 0.828 | < 0.001 | 0.374 | < 0.001 |
| Standing | 1 | – | 0.369 | < 0.001 | ||
| Sitting | 1 | – | ||||
* There is a strong correlation between images in the supine and standing positions; ASI = acetabular sagittal inclination.
