Table 2.

Intraclass correlation for provider random intercepts model and likelihood ratio tests assessing the significance of adding provider‐level random effects on each of the time and time*race/ethnicity covariates

Provider‐level random intercepts model, intraclass correlation, conditional on race, time, and race*time interactions
Intraclass correlation at provider level	0.121
Intraclass correlation at patient level	0.438
Residual share in total variance	0.441

Likelihood ratio tests	LR χ2	P‐value
Adding provider‐level random effect on Black race covariate	821.25	<0.0001
Adding provider‐level random effect on pre‐bw slope covariate	13 724.06	<0.0001
Adding provider‐level random effect on Black race*pre‐BW slope covariate	524.39	<0.0001
Adding provider‐level random effect on level shift covariate	3967.91	<0.0001
Adding provider‐level random effect on Black race*level shift covariate	29.25	<0.0001
Adding provider‐level random effect on change in slope covariate	9660.12	<0.0001
Adding provider‐level random effect on Black race*change in slope covariate	1774.05	<0.0001

Data: Medicaid analytic eXtract for NY, CA, NC, and FL (n = 7 026 029 medical claims for 1 228 596 beneficiaries).