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Demographic of the patients of each group (CoCR: Co Cr; CoCRHC: CoCr—high carbid).
| Materials (head-liner) | THAs | Mean age | Mean BMI | Women |
|---|---|---|---|---|
| Ceramic-CoCr | 230 | 63.2 ± 2.2 | 29.1 ± 0.6 | 49% |
| CoCr-CoCr | 981 | 62.3 ± 5.5 | 28.1 ± 2.1 | 52% |
| CoCr-polyethylene | 811 | 63.0 ± 9.8 | 27.7 ± 2.4 | 57% |
| CoCrHC-CoCrHC | 258 | 59.6 ± 11.0 | 28.0 ± 1.4 | 45% |
| Control group | 232 | 50.4 ± 26.4 | 26.4 ± 3.8 | 35% |
