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Table 6 Determinants of individual copayment and cost-of-service

From: The redistributive effects of copayment in outpatient prescriptions: evidence from Lombardy

  Dependent variable
Independent variables Copayment (Model #1) Cost (Model #2)
Number of prescriptions 3.805c 9.055c
Female 3.701c –6.507c
Age 0.236c 0.946c
Number of children –0.285c –2.190c
Family members with disability 2.622c 4.915a
Dependent spouse –0.662c –6.176c
Self Employed –1.194c 0.817
Employed 2.632c 6.631c
Retired 1.694c –1.715a
Income classes
 <8,000 –0.546 –3.672
 8,001−15,000 2.768c 3.536
 15,001−24,000 3.991c 9.651a
 24,001−35,000 5.613c 12.61c
 35,001−55,000 8.880c 19.70c
 55,001−75,000 7.062c 10.46b
 >75,001 –0.48 –4.908
Demand groups
 Group #1 –36.22c –32.09c
 Group #2 –36.59c –61.42c
Interaction income classes-demand groups
 <8,000× Group #1 –0.535 –0.891
 <8,000× Group #2 –1.068 3.676
 8,001−15,000× Group #1 –6.199c –13.24b
 8,001−15,000× Group #2 –6.126c –11.03
 15,001−24,000× Group #1 –6.092c –14.79c
 15,001−24,000× Group #2 –8.025c –19.92
 24,001−35,000× Group #1 –8.092c –17.79c
 24,001−35,000× Group #2 –9.537c –24.93a
 35,001−55,000× Group #1 –10.06c -22.44c
 35,001−55,000× Group #2 –12.23c –32.42b
 55,001−75,000× Group #1 –9.340c –16.85c
 55,001−75,000× Group #2 –9.743c –22.48a
 >75,001× Group #1 –5.991c –10.16a
 >75,001× Group #2 –3.142 –8.194
ASL dummies included included
Marital status dummies included included
Constant 40.12c 40.48c
Observations 2,301,571 2,301,571
R-squared 0.607 0.166
BIC 24,620,754.3 32,831,101.4
  1. Legend: a 10% significance level; b 5%; c 1%