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Table 5 Risk and efficiency index for centers.

From: Variability in prescription drug expenditures explained by adjusted clinical groups (ACG) case-mix: A cross-sectional study of patient electronic records in primary care

Family physicians     
Center Observed expenditure Expected expenditure Risk Index Efficiency Index
A 37.94 32.80 0.78 1.16
B 46.14 79.84 1.90 0.58
C 41.18 36.62 0.87 1.12
D 41.80 34.21 0.81 1.22
E 46.85 51.57 1.23 0.91
Total 41.99 41.99 1.00 1.00
Pediatricians     
Center Observed expenditure Expected expenditure Risk Index Efficiency Index
A 7.28 5.00 0.97 1.46
B 4.34 6.02 1.16 0.72
C 13.09 5.56 1.07 2.36
D 1.25 3.93 0.76 0.32
E 2.70 5.45 1.05 0.50
Total 5.18 5.18 1.00 1.00
  1. Mean pharmaceutical expenditure per visited patient, observed and expected according to ACGs distribution (in euros).