From: Factors predicting hospital length-of-stay after radical prostatectomy: a population-based study
Model | Variable (comparison) | Adjusted OR1 | 95% CI2 | p-value |
---|---|---|---|---|
Model 1 (primary analysis): Hospital and surgeon volume both fitted in model (without interaction term)1 | Hospital volume: (higher vs lower) | 0.34 | 0.26-0.45 | Â |
Surgeon volume: (higher vs lower) | 0.55 | 0.42-0.71 | Â | |
Model 2: Surgeon volume omitted | Hospital volume: (higher vs lower) | 0.37 | 0.29-0.48 | p < 0.0013 |
Model 3: Hospital volume omitted | Surgeon volume: (higher vs lower) | 0.63 | 0.49-0.81 | p < 0.0013 |
Model 4: Hospital and surgeon volume fitted with an interaction term4 | Hospital volume main effect: (higher vs lower) | 0.28 | 0.20-0.40 | p = 0.1054 |
Surgeon volume main effect: (higher vs lower) | 0.46 | 0.33-0.64 | ||
 | Interaction effect | 1.55 | 0.92-2.65 |  |