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Table 5 Oaxaca-type decomposition for changes in the CIs in gastric cancer screening services between Korea National Health and Nutrition Examination Survey (KNHANES) cycle 1(1998) and cycle 5 (2010-2012)

From: Assessment of trends in socioeconomic inequalities in cancer screening services in Korea, 1998–2012

Oaxaca-type approach for gastric cancer screening Between cycle 1(1998) and cycle 5 (2010-2012)
Change arising from change in
Ck Elasticity Total Percentage
Sex- female -0.0003 -0.0025 -0.0028 5.81
Age -0.0043 -0.0203 -0.0245 51.38
Self-rated health - fair -0.0017 0.0095 0.0078 -16.35
Self-rated - poor 0.0012 0.0060 0.0072 -15.04
Marital status- married 0.0035 0.0035 0.0070 -14.57
Education - completion of middle school -0.0014 -0.0003 -0.0017 3.53
Education - completion of high school -0.0013 -0.0110 -0.0123 25.78
Education - completion of University or above -0.0021 -0.0276 -0.0297 62.10
Employment - non-manual job -0.0023 -0.0218 -0.0241 50.51
Employment - othersa 0.0008 0.0102 0.0109 -22.90
Income quintile 2 (low) -0.0008 0.0255 0.0247 -51.65
Income quintile 3 0.0002 0.0019 0,0021 -4.48
Income quintile 4 -0.0014 -0.0433 -0.0448 93.73
Income quintile 5(high) -0.0026 -0.0190 -0.0216 45.23
Insurance - National Health Insurance 0.0000 0.0016 0.0016 -3.34
Insurance - neither 0.0000 -0.0026 -0.0026 5.54
Region - Metro Seoul areas 0.0007 -0.0048 -0.0041 8.64
Place of residence - rural areas -0.0001 -0.0066 -0.0068 14.45
Sub-total -0.0120 -0.1017 -0.1109 232.25
Residual    0.0632 -132.25
Total -0.0470   -0.0478 100.00
  1. a“Others” included unemployment and out of labour market