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Table 1 Variance Components and Intra-class Correlation (ICC) for Random Effects Models

From: Adjusting for geographic variation in observational comparative effectiveness studies: a case study of antipsychotics using state Medicaid data

  Var SE p-value ICC
Mental-health Related Hospitalizations     
  Unadjusted, MHSA Random Effect 0.034 0.017 <0.0001 1.0%
  Adjusted, MHSA Random Effect 0.017 0.014 0.033 0.5%
  Unadjusted, County Random Effect 0.044 0.020 <0.0001 1.3%
  Adjusted, County Random Effect 0.023 0.018 0.029 0.7%
Mental-health Related ED Visits     
  Unadjusted, MHSA Random Effect 0.071 0.027 <0.0001 2.1%
  Adjusted, MHSA Random Effect 0.027 0.016 0.001 0.8%
  Unadjusted, County Random Effect 0.070 0.023 <0.0001 2.1%
  Adjusted, County Random Effect 0.037 0.019 0.001 1.1%