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Table 4 Decomposition results: contributions of determinants to Concentration Indices (absolute value and adjusted percentage of total explanatory variables)

From: Measuring and decomposing inequity in self-reported morbidity and self-assessed health in Thailand

  Recent illness Chronic illness Hospital admission Health compared to a year ago Health compared to peers
Concentration Index -0.099 -0.085 -0.103 -0.139 -0.174
Age-sex adjusted CI -0.070 -0.043 -0.068 -0.090 -0.138
Demographic characteristics      
Age-sex      
   Males aged 30–44 0.003 0.006 0.002 0.008 0.008
   Males aged 45–59 0.003 0.005 0.002 0.006 0.004
   Males aged 60+ -0.016 (8.6%) -0.025 (13.8%) -0.017 (12.4%) -0.031 (13.3%) -0.022 (7.1%)
   Females aged 15–29 0.002 0.002 -0.001 (1.0%) 0.002 0.001
   Females aged 30–44 0.007 0.009 0.000 0.008 0.008
   Females aged 45–59 -0.001 (0.5%) -0.002 0.000 (0.3%) -0.002 (0.7%) -0.001 (0.4%)
   Females aged 60+ -0.026 (13.9%) -0.036 (19.8%) -0.020 (14.2%) -0.041 (17.9%) -0.033 (10.3%)
  -0.029 (23.0%) -0.042 (33.7%) -0.034 (27.8%) -0.049 (31.9%) -0.036 (17.9%)
Household type      
   One-person male household 0.001 0.001 -0.000 (0.2%) 0.000 0.000
   One-person female household -0.001 (0.5%) 0.000 (0.1%) 0.000 0.000 (0%) 0.000 (0%)
   HH with children (no elderly) 0.001 0.000 (0.2%) 0.001 0.000 0.000
   HH with elderly 0.004 0.001 0.005 0.005 0.005
   HH with dependents only 0.001 0.000 0.004 0.002 0.002
  0.006 (0.5%) 0.001 (0.3%) 0.010 (0.2%) 0.008 (0%) 0.008 (0%)
Socioeconomic characteristics      
Income      
   Income quintile 1 -0.028 (14.7%) 0.009 -0.015 (10.9%) -0.054 (23.5%) -0.074 (23.4%)
   Income quintile 2 -0.011 (5.7%) 0.007 -0.008 (5.6%) -0.012 (5.3%) -0.012 (3.7%)
   Income quintile 3 0.000 -0.000 (0.3%) 0.000 0.000 0.001
   Income quintile 4 0.006 -0.007 (3.9%) -0.001 (0.7%) 0.007 0.004
Education      
   Education: primary level -0.021 (11.1%) -0.028 (15.3%) -0.002 (1.4%) -0.033 (14.1%) -0.041 (12.9%)
   Education: secondary level 0.002 0.003 -0.004 (3.1%) 0.000 (0%) 0.003
Work status      
   Work: agriculture and fishery 0.005 0.012 0.012 0.002 0.015
   Work: elementary occupation -0.001 (0.3%) -0.000 (0.2%) 0.000 0.000 0.000
   Not in workforce: housewife 0.001 0.000 -0.000 (0.1%) 0.000 0.000 (0%)
   Not in workforce: disabled -0.006 (2.9%) -0.010 (5.4%) -0.013 (9.3%) -0.007 (3.1%) -0.020 (6.4%)
   Not in workforce: others 0.001 -0.001 (0.8%) -0.008 (5.9%) -0.002 (1.0%) -0.003 (1.0%)
  -0.050 (34.8%) -0.017 (25.9%) -0.038 (37.0%) -0.098 (47.1%) -0.125 (47.4%)
Geographic characteristics      
   Bangkok 0.005 0.006 -0.032 (23.0%) -0.003 (1.5%) 0.007
   Rural Central 0.002 0.003 -0.001 (0.8%) 0.001 0.002
   Urban North 0.001 0.000 0.000 0.000 0.000
   Rural North -0.037 (19.5%) -0.028 (15.5%) -0.011 (7.7%) -0.002 (0.8%) -0.018 (5.9%)
   Urban Northeast 0.000 0.000 0.000 0.000 0.001
   Rural Northeast -0.041 (21.6%) -0.044 (24.3%) -0.005 (3.4%) -0.042 (18.3%) -0.090 (28.5%)
   Urban South 0.000 0.001 0.000 (0.1%) 0.000 0.001
   Rural South -0.001 (0.7%) -0.001 (0.4%) 0.000 -0.001 (0.4%) -0.001 (0.4%)
  -0.071 (41.8%) -0.063 (40.2%) -0.048 (35.0%) -0.047 (21.0%) -0.099 (34.7%)
Residuals (unexplained) 0.045 0.036 0.009 0.047 0.078
  1. Note: Reference groups were males aged 15–29; household with no dependent; income quintile 5; work status: others including professionals, technicians, or service workers; and urban Central excluding Bangkok.
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