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Table 1 Multilevel regression models for normal users.

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

Normal users      
Pharmacy cost (ln)   MODEL I MODEL II MODEL III MODEL IV
Patient      
  Age     0.040 (0.000)
  Sex    0.08 (0.000)  
  ACG 0.05 (0.000) 0.05 (0.000) 0.05 (0.000) 0.033 (0.000)
Physician      
  Sex   -0.28 (0.000) -0.28 (0.000) 0.04 (0.183)
  Academic training   -0.30 (0.002) -0.30 (0.000) 0.15 (0.000)
  Work experience   -0.01 (0.015) -0.01 (0.001) 0.01 (0.000)
  R 2 0.313 0.317 0.317 0.488
  σ e 1.470 1.470 1.470 1.307
  σ υ 0.554 0.533 0.403 0.222
  ρ 0.124 0.1161 0.070 0.028
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