Table 3: Adjusted fracture rates*.
| Fracture type; variable | Adjusted IRR (95% CI) |
|---|---|
| Supracondylar humerus | |
| Overall | 1.075 (1.072-1.079) |
| Transferred | 1.069 (1.065-1.073) |
| Direct presentation | 1.075 (1.075-1.10) |
| Gartland type II | 1.088 (1.080-1.097) |
| Gartland type III | 1.070 (1.064-1.075) |
| Femur | |
| Overall | 1.053 (1.044-1.062) |
| Transferred | 1.056 (1.048-1.065) |
| Direct presentation | 1.060 (0.99-1.13) |
| Spica casting | 1.055 (1.037-1.74) |
| Fixation | 1.060 (1.043-1.69) |
Note: CI = confidence interval, IRR = incidence rate ratio.
*Supracondylar humerus operation rates were adjusted for age, sex, American Society of Anesthesiologists score, patient Local Health Integrated Network (LHIN), Gartland classification, open fracture, presence of preoperative nerve palsy, associated fracture, surgery in summer and after-hours surgery. Femur operation rates were adjusted for age, sex, presence of comorbidity, patient LHIN, injury severity (high/low energy), stabilization method, open fracture, associated fracture, surgery in summer and after-hours surgery.