| Model 1 | Model 2 | Model 3 | Model 4 | Model 5 | Model 6 | Model 7 | Model 8 |
---|---|---|---|---|---|---|---|---|
Ln (Size) | −0.088* | −0.081 | −0.077** | −0.083** | −0.080* | −0.094** | −0.097** | −0.101*** |
Ln (Dimension) | 0.197*** | 0.174*** | 0.172** | 0.195*** | 0.200*** | 0.216*** | 0.198*** | 0.204*** |
SFA |  | −0.065 |  |  |  |  |  |  |
Pooled | Â | 0.060 | Â | Â | Â | Â | Â | Â |
Output orientation | Â | 0.035 | Â | Â | Â | Â | Â | Â |
Heterogeneity in location |  |  | −0.033 |  |  |  |  |  |
Heterogeneity in activity | Â | Â | Â | 0.020 | Â | Â | Â | Â |
Heterogeneity in ownership status | Â | Â | Â | Â | 0.041 | Â | Â | Â |
Heterogeneity in type of hospital | Â | Â | Â | Â | Â | 0.069* | 0.072** | 0.069* |
Published from 2010 onwards |  |  |  |  |  |  | −0.071** | −0.076** |
Percentage of teaching hospitals in sample |  |  |  |  |  |  |  | −0.077 |
Constant | 0.731 *** | 0.667 *** | 0.754*** | 0.705*** | 0.691*** | 0.669*** | 0.750*** | 0.779*** |
N | 43 | 43 | 43 | 43 | 43 | 43 | 43 | 36 |
R-squared | 0.290 | 0.336 | 0.298 | 0.294 | 0.305 | 0.354 | 0.423 | 0.456 |