Table 1.
Baseline characteristics of the study population
| Hip arthroscopy (n=171) | Personalised hip therapy (n=177) | ||
|---|---|---|---|
| Age (years) | 35·4 (9·7) | 35·2 (9·4) | |
| Sex | |||
| Women | 71 (42%) | 64 (36%) | |
| Men | 100 (58%) | 113 (64%) | |
| Current smoker | |||
| Yes | 31 (18%) | 25 (14%) | |
| No | 136 (80%) | 151 (85%) | |
| Missing data | 4 (2%) | 1 (1%) | |
| Hip side considered for treatment | |||
| Right | 95 (56%) | 103 (58%) | |
| Left | 75 (44%) | 74 (42%) | |
| Participants with bilateral symptoms | 11 (6%) | 18 (10%) | |
| Duration of hip symptoms (months) | 37 (36·6) | 40 (40·8) | |
| Impingement type | |||
| Cam | 129 (75%) | 133 (75%) | |
| Mixed | 29 (17%) | 30 (17%) | |
| Pincer | 13 (8%) | 14 (8%) | |
| Units of alcohol in an average week | 6·2 (8·6) | 6·0 (7·7) | |
| Diabetes | |||
| Yes | 2 (1%) | 4 (2%) | |
| No | 165 (96%) | 171 (97%) | |
| Missing data | 4 (2%) | 2 (1%) | |
| Chronic renal failure | |||
| Yes | 1 (1%) | 0 | |
| No | 166 (97%) | 176 (99%) | |
| Missing data | 4 (2%) | 1 (1%) | |
| Physical activity (UCLA Activity Scale) | 4·3 (2·5) | 4·4 (2·5) | |
| Hip-related quality of life (iHOT-33) | 39·2 (20·9) | 35·6 (18·2) | |
| SF-12 PCS | 44 (7·6) | 44 (5·9) | |
| SF-12 MCS | 42 (7·1) | 42 (7·3) | |
| EQ-5D 3L/5L Index Score | 0·576 (0·26) | 0·557 (0·25) | |
| EQ-5D 5L VAS | 67 (20·2) | 67 (18·7) | |
| Mean lateral centre edge angle (°) | 31 (5) | 31 (5) | |
| Number of participants with LCEA <25° | 7 (4%) | 6 (3%) | |
| Number of participants with LCEA <20° | 0 | 0 | |
| Mean alpha angle (°) measured on antero-posterior radiograph | 61 (17) | 64 (18) | |
Data are mean (SD) or n (%). UCLA=University of California Los Angeles. iHOT-33=International Hip Outcome Tool. SF-12=12-item Short Form Health Survey. PCS=physical component score. MCS=mental component score. VAS=visual analogue score. LCEA=lateral centre edge angle.