Table 4 Multilevel regression analysis of the explanatory variables on the overall range of different medicines prescribed by GPs in 2001
From: Determinants of the range of drugs prescribed in general practice: a cross-sectional analysis
| Â | Empty model | Full model | Â |
|---|---|---|---|
| Â | Estimate (standard error) | Estimate (standard error) | Hypothesis |
practice level fixed effects | Â | Â | Â |
- prescriptions per patient | Â | 0.2583 (0.1005)* | Confirmed |
GP level fixed effects: | Â | Â | Â |
- visits representatives industry | Â | 0.9289 (0.0456)* | Confirmed |
- individual list size | Â | 0.0000765(0.0002074)* | Confirmed |
variance components: | Â | Â | Â |
practice level intercept | 0.1276(0.1521) | 0.2684(0.1424) | Â |
GP level intercept | 0.8419(0.1749)* | 0.5914(0.1324)* | Â |
intraclass correlation | 13.2% | 31.2% | Â |