Logistic regression modeling predicting patient with no clinically important improvement after surgery, adjusted for age, sex, body mass index, and comorbidity.
| Covariate | TWH, n = 457 | HHS, n = 2720 | ||
|---|---|---|---|---|
| OR (95% CI) | p | OR (95% CI) | p | |
| Age | 1.06 (1.02, 1.10) | 0.0003 | 0.99 (0.98, 1.01) | 0.12 |
| Male sex | 1.31 (0.68, 2.56) | 0.74 | 0.72 (0.57, 0.92) | 0.008 |
| BMI | 0.99 (0.94, 1.05) | 0.07 | 0.99 (0.98, 1.02) | 0.76 |
| Comorbidity | 0.87 (0.87, 1.09) | 0.31 | 0.98 (0.88, 1.09) | 0.63 |
TWH: Toronto Western Hospital; HHS: Hamilton Health Sciences Henderson Hospital; BMI: body mass index.