Table 5.

Variation between private practices for each subsequent multilevel model

Random effects (intercepts)	Empty model (95% CrI)	Multilevel Model 1: (95% CrI)	Multilevel Model 2: (95% CrI)	Multilevel Model 3: (95% CrI)
Practice
Variance	4.93 (1.96–12.43)	5.33 (2.13–13.35)	5.33 (2.13–13.34)	4.60 (2.04–10.38)
MOR	8.31 (3.8–28.86)	9.05 (4.02–32.63)	9.05 (4.03–32.58)	7.74 (3.91–21.63)
Proportional change in variance (PCV) (%)
Practice	–	−8.1	0.0	13.7

Note. MOR, median odds ratio; CrI, Credible interval