Table 3: Adjusted fracture rates*
Fracture type; variableAdjusted IRR (95% CI)
Supracondylar humerus
Overall1.075 (1.072-1.079)
Transferred1.069 (1.065-1.073)
Direct presentation1.075 (1.075-1.10)
Gartland type II1.088 (1.080-1.097)
Gartland type III1.070 (1.064-1.075)
Femur
Overall1.053 (1.044-1.062)
Transferred1.056 (1.048-1.065)
Direct presentation1.060 (0.99-1.13)
Spica casting1.055 (1.037-1.74)
Fixation1.060 (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.