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Table 2 Multilevel regression models for outlier patients.

From: Pharmacy cost outliers in primary care; multilevel approach based on ACG in the Spanish context

Outliers      
Pharmacy cost (ln)   MODEL I MODEL II MODEL III MODEL IV
Patient      
  Age     -0.01 (0.000)
  Sex    -0.03 (0.059)  
  ACG 0.04 (0.000) 0.04 (0.000) 0.04 (0.000) 0.04 (0.000)
Physician      
  Sex   -0.02 (0.278) -0.02 (0.296) -0.02 (0.146)
  Academic training   0.02 (0.402) 0.02 (0.389) 0.02 (0.384)
  Work experience   0.01 (0.060) 0.01 (0.051) 0.01 (0.036)
  R 2 0.611 0.602 0.602 0.603
  σ e 0.518 0.518 0.518 0.518
  σ υ 0.021 0.064 0.064 0.044
  ρ 0.002 0.015 0.015 0.007
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