Table 2.
Demographic and presurgical clinical variables for the study cohort
| Variable | Followup group (N = 111) | Nonfollowup group (N = 229) | Entire cohort (N = 340) | |
|---|---|---|---|---|
| Age at arthroscopy (years) | Mean ± SD | 38.3 ± 12.6 | 35.0 ± 12.8 | 36.1 ± 12.9 |
| Range | 16–72 | 12–82 | 12–82 | |
| Gender | Male | 47 (42%) | 101 (44%) | 148 (44%) |
| Female | 64 (58%) | 128 (56%) | 192 (56%) | |
| Acetabular Outerbridge grade | Normal | 51 (46%) | 114 (50%) | 165 (49%) |
| Grade I | 13 (12%) | 32 (14%) | 45 (13%) | |
| Grade II | 15 (14%) | 30 (13%) | 45 (13%) | |
| Grade III | 10 (9%) | 19 (8%) | 29 (9%) | |
| Grade IV | 22 (20%) | 34 (15%) | 56 (16%) | |
| Femoral Outerbridge grade | Normal | 56 (50%) | 141 (62%) | 197 (58%) |
| Grade I | 16 (14%) | 34 (15%) | 50 (15%) | |
| Grade II | 12 (11%) | 24 (10%) | 36 (11%) | |
| Grade III | 10 (9%) | 15 (7%) | 25 (7%) | |
| Grade IV | 17 (15%) | 15 (7%) | 32 (9%) | |
| Labral tear | No | 51 (46%) | 102 (45%) | 153 (45%) |
| Yes | 60 (54%) | 127 (55%) | 187 (55%) | |
Percentages represent the portion of each cohort.