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Sub-group analysis showing the influence of ethnicity on the amount of posterior tibial slope with posterior tibial cortex (PTC) and tibial proximal anatomical axis (TPAA) methods in patients of the same gender
| White | Black | p | Power | Cohen’s d | |
|---|---|---|---|---|---|
| Male | |||||
| PTC | 5.0 ± 1.2 | 7.4 ± 3.0 | <0.0001 | 100% | 1.05 |
| TPAA | 6.4 ± 1.1 | 10.5 ± 3.1 | <0.0001 | 100% | 1.76 |
| Female | |||||
| PTC | 5.1 ± 1.2 | 6.2 ± 2.9 | <0.0001 | 99.7% | 0.50 |
| TPAA | 7.6 ± 1.1 | 9.9 ± 3.0 | <0.0001 | 100% | 1.02 |
