Table 3.
The Cox regression survival analysis with hazard ratios demonstrates the factors associated with conversion to THA after arthroscopic hip surgery for FAI, for total available follow-up (n = 11,323)
| Variable | Hazard ratio (95% CI) | p value |
| Age | 1.08 (1.07 to 1.09) | < 0.001a |
| Male | 1.12 (0.95 to 1.31) | 0.08 |
| Diagnoses | ||
| Osteoarthritis | 2.53 (2.13 to 3.01) | < 0.001a |
| Inflammation | 1.53 (1.10 to 2.11) | 0.01a |
| Dysplasia | 1.27 (0.83 to 1.92) | 0.27 |
| Soft tissue | 0.94 (0.76 to 1.17) | 0.59 |
| Lower back pain | 0.86 (0.71 to 1.05) | 0.15 |
| Smoking | 1.55 (1.14 to 2.11) | 0.005a |
| Charlson Comorbidity index | 0.95 (0.84 to 1.06) | 0.39 |
| Obesity | 1.21 (0.87 to 1.67) | 0.25 |
| Opioid use | 2.02 (1.71 to 2.38) | < 0.001a |
| Depression | 1.15 (0.85 to 1.55) | 0.36 |
Indicates statistical significance.