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Table 2 Multivariate Regression Results

From: Household out-of-pocket medical expenditures and national health insurance in Taiwan: income and regional inequality

Variables Coefficient Standard Error
Constant 8.6900 *** 0.0604
Demographic variables   
   Married 0.1511 *** 0.0188
   Male -0.1399 *** 0.0194
   Employed -0.2753 *** 0.0330
   Age   
25–44 -0.0284 0.0413
45–64 -0.0158 0.0430
65 and above 0.2983 *** 0.0524
(Under 25 is the default variable)   
   Education   
Junior high 0.0561 ** 0.0184
Senior (vocational) high 0.1269 *** 0.0169
Junior college 0.2568 *** 0.0220
College and above 0.2891 *** 0.0230
(Primary school and below is the default variable)   
   Family members 0.1668 *** 0.0053
NHI -0.2657 *** 0.0391
Household income   
   Lower 20%~2nd quintile 0.1638 *** 0.0362
   Middle 20%~3rd quintile 0.3405 *** 0.0358
   Higher 20%~4th quintile 0.5847 *** 0.0363
   Highest 20%~5th quintile 0.8981 *** 0.0371
   (Lowest 20%~1 quintile is the default variable)   
Regional variables   
   Center 0.1077 *** 0.0237
   South 0.0010 0.0217
   East 0.3802 *** 0.0504
   (North is the default variable)   
Interaction effects   
   Lower 20% income/NHI 0.0327 0.0443
   Middle 20% income/NHI -0.0664 0.0441
   Higher 20% income/NHI -0.2465 *** 0.0445
   Highest 20% income/NHI -0.4146 *** 0.0447
   Center/NHI 0.0785 ** 0.0322
   South/NHI 0.1693 *** 0.0286
   East/NHI -0.4471 *** 0.0639
Numbers of observation 23925
F 177.81
Prob >F 0.0001
R-squared 0.1621
Adjust R-squared 0.1612
  1. *** Significant at 0.01 level; ** significant at 0.05 level; * significant at 0.1 level.