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Table 4 Decomposition analysis of concentration index in depressive symptoms among elderly

From: Decomposing socioeconomic inequalities in depressive symptoms among the elderly in China

Variable Elasticity Ck Absolute contribution to C Percentage contribution to C
Age
 60–64 Ref    
 65–74 −0.046 −0.014 0.001 −1.02
 ≥ 75 −0.038 −0.087 0.003 −5.11
Sex
 Men Ref    
 Women 0.199 −0.013 −0.003 4.06
Living arrangement
 Living alone 0.023 0.076 0.002 −2.65
 Living with their spouse −0.010 0.080 −0.001 1.23
 Other arrangement Ref    
Income −0.566 0.059 −0.033 51.65
Education
 Illiterate 0.069 −0.131 −0.009 13.93
 Capable of reading or writing 0.058 −0.052 −0.003 4.65
 Elementary school 0.021 0.003 0.000 −0.11
 Middle school and above Ref    
Working status
 Yes −0.057 −0.057 0.003 −5.04
 No Ref    
Location
 Urban-eastern Ref    
 Rural-eastern 0.059 −0.134 −0.008 12.19
 Urban-central 0.027 0.143 0.004 −6.02
 Rural-central 0.082 −0.124 −0.010 15.88
 Urban-west 0.037 0.156 0.006 −8.98
 Rural-west 0.170 −0.089 −0.015 23.34
Social activity −0.073 0.128 −0.009 14.48
Smoking
 Yes 0.048 0.002 0.000 −0.17
 No Ref    
Physical disabilities
 Yes 0.024 −0.052 −0.001 1.93
 No Ref    
Brain damage
 Yes 0.021 0.008 0.000 −0.27
 No Ref    
Vision problems
 Yes 0.031 −0.035 −0.001 1.70
 No Ref    
Hearing problems
 Yes 0.012 −0.029 0.000 0.55
 No Ref    
Residual (unexplained)    −0.075 −16.25
  1. Note: C k concentration index of explanatory variables, C concentration index of independent variable, Ref reference group