Table 4 Variation between public practices and between its prescribers for each subsequent multilevel model
From: Variation of polypharmacy in older primary care attenders occurs at prescriber level
Random effects (intercepts) | Empty model (95% CrI) | Multilevel Model 1: (95% CrI) | Multilevel Model 2: (95% CrI) | Multilevel Model 3: (95% CrI) |
|---|---|---|---|---|
Practice | ||||
Variance | 0.81 (0.13–4.95) | 0.67 (0.12–3.67) | 0.51 (0.05–4.82) | 0.21 (0.001–43.59) |
MOR | 2.28 (1.4–7.67) | 2.11 (1.37–5.78) | 1.92 (1.24–7.46) | 1.52 (1.03–422.31) |
Prescriber | ||||
Variance | 3.13 (1.9–5.18) | 2.73 (1.78–4.18) | 2.70 (1.72–4.25) | 2.75 (1.72–4.38) |
MOR | 5.06 (3.53–8.03) | 4.54 (3.39–6.51) | 4.51 (3.33–6.6) | 4.56 (3.33–6.8) |
Practice & prescriber | ||||
Variance | 3.94 | 3.39 | 3.21 | 2.96 |
MOR | 6.16 | 5.40 | 5.16 | 4.83 |
Proportional change in variance (PCV) (%) | ||||
Practice | – | 17.3 | 23.9 | 58.8 |
Prescriber | – | 12.8 | 1.1 | −1.9 |
Practice & prescriber | – | 14.0 | 5.3 | 7.8 |