Characteristics of study patients and preoperative scores for patient-reported outcome measures
| Characteristic or score | No. (%) of patients who underwent THR in 2008–2012* | p value | ||
|---|---|---|---|---|
| All patients n = 1895 | Patients who completed preoperative PROMs n = 878 | Patients who completed both preoperative and postoperative PROMs n = 367 | ||
| Age, mean ± SD | 65.16 ± 12.00 | — | 63.65 ± 10.26 | 0.003 |
| Sex (male) | 805 (42.5) | — | 160 (43.6) | 0.79 |
| Side (left) | 919 (48.5) | — | 167 (45.5) | 0.20 |
| BMI, mean ± SD | 29.25 ± 6.21 | — | 28.80 ± 5.74 | 0.10 |
| ASA class | ||||
| I | 77 (4.1) | — | 29 (7.9) | < 0.001 |
| II | 934 (49.3) | — | 205 (55.9) | — |
| III | 854 (45.1) | — | 131 (35.7) | — |
| IV | 30 (1.6) | — | 2 (0.50) | — |
| Approach | ||||
| Anterior | 456 (24.1) | — | 125 (34.1) | < 0.001 |
| Posterior | 833 (44.0) | — | 138 (37.6) | — |
| Lateral | 606 (32.0) | — | 104 (28.3) | — |
| Preoperative WOMAC score, mean ± SD | ||||
| Pain | — | 44.26 ± 17.48 | 46.37 ± 16.98 | 0.002 |
| Function | — | 39.70 ± 17.74 | 42.12 ± 17.10 | 0.001 |
| Preoperative HOOS score, mean ± SD | ||||
| Pain | — | 38.44 ± 16.22 | 40.49 ± 15.73 | 0.002 |
| Symptoms | — | 40.04 ± 17.93 | 40.46 ± 17.43 | 0.53 |
| Sports and recreational function | — | 22.80 ± 22.32 | 23.44 ± 21.46 | 0.48 |
| Hip-related quality of life | — | 21.07 ± 16.61 | 22.82 ± 16.74 | 0.009 |
ASA = American Society of Anesthesiologists; BMI = body mass index; HOOS = Hip Disability and Osteoarthritis Outcome Score; PROMs = patient-report outcome measures; SD = standard deviation; THR = total hip replacement; WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index.
↵* Unless indicated otherwise.