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Mean and change in Harris Hip Score (HHS) in patients undergoing primary and revision total hip replacement (THR) and mean differences with 95% confidence interval
| Primary THR mean (SD) | Revision THR mean (SD) | Mean difference (primary-revision) | |
|---|---|---|---|
| Baseline HHS | 48 (13) | 56 (23) | -8 (-10 to -6) |
| Follow-up HHS | 91 (11) | 87 (14) | 4 (3-5) |
| Change HHS | 43 (16) | 31 (24) | 12 (10-14) |
