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Table 8 Sensitivity analysis: self-employed dummy. Self-employed and employed subsample

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

Variables Copayment (Model #1) Cost (Model #2)
Number of prescriptions 3.705*** 8.874***
Female 4.517*** –8.412***
Age 0.386*** 1.175***
Number of children –0.00863 –1.698***
Family members with disability 3.171*** 6.652**
Dependent spouse –1.598*** –8.886***
Self Employed 6.185 6.629
Income classes
 8,000 9.087 7.45
 8,001−15,000 11.41 15.39
 15,001−24,000 12.95 23.81
 24,001−35,000 13.86* 24.81
 35,001−55,000 14.17* 26.16
 55,001−75,000 11.85 14.4
 >75,001 4.776 –1.135
Demand groups
 Group #1 –28.20*** –30.86
 Group #2 –18.68 –47.81
Interaction income classes-demand groups
 8,000 # Group #1 –11.07 –9.335
 8,000 # Group #2 -22.46 -9.417
 8,001−15,000 # Group #1 –12.66 –12.19
 8,001−15,000 # Group #2 –23.89 –19.9
 15,001−24,000 # Group #1 –12.49 –13.5
 15,001−24,000 # Group #2 –25.99 –32.26
 24,001−35,000 # Group #1 –14.62 –16.5
 24,001−35,000 # Group #2 –27.4 –37.17
 35,001−55,000 # Group #1 –16.11* –21.23
 35,001−55,000 # Group #2 –27.75 –40.61
 55,001−75,000 # Group #1 –15.81 –15.64
 55,001−75,000 # –25.24 –28.98
 >75,001 # Group #1 –13.87 –11.67
 >75,001 # Group #2 –19.66 –15.39
Interaction income classes-self employed
 8,000 # Self Employed –10.62 –13.94
 8,001−15,000 # Self Employed –10.21 –14.02
 15,001−24,000 # Self Employed –12.8 –17.72
 24,001−35,000 # Self Employed –13.53* –21.94
 35,001−55,000 # Self Employed –12.68 –19.61
 55,001−75,000 # Self Employed –9.665 –11.28
 >75,001 # Self Employed –8.995 –9.57
Interaction demand groups-self employed
 Group #1 # Self Employed –9.045 –3.248
 Group #2# Self Employed –20.12 –17.39
Interaction income classes-demand groups-self employed
 8,000 # Group #1 # Self Employed 11.78 16.78
 8,000 # Group #2# Self Employed 23.15 16.86
 8,001−15,000 # Group #1 # Self Employed 9.68 8.141
 8,001−15,000 # Group #2# Self Employed 21 12.45
 15,001−24,000 # Group #1 # Self Employed 10.31 3.395
 15,001−24,000 # Group #2# Self Employed 22.55 15.59
 24,001−35,000 # Group #1 # Self Employed 11.44 7.053
 24,001−35,000 # Group #2# Self Employed 23.14 20.38
 35,001−55,000 # Group #1 # Self Employed 12.1 7.858
 35,001−55,000 # Group #2# Self Employed 22.54 19.6
 55,001−75,000 # Group #1 # Self Employed 10.26 6.537
 55,001−75,000 # Group #2# Self Employed 18.97 10.18
 >75,001 # Group #1 # Self Employed 11.57 10.58
 >75,001 # Group #2# Self Employed 19.14 10.25
ASL dummies included included
Marital status dummies included included
Constant 29.53*** 29.71
Observations 1,688,020 1,688,020
R-squared 0.599 0.162
BIC 17,951,547.9 23,988,370.4
  1. Legend: * 10% significance level; ** 5%; *** 1%