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Table 2 Regression and decomposition results: coefficient, concentration index (C) and proportional contribution

From: Malnutrition and the disproportional burden on the poor: the case of Ghana

Variables Coefficient C Contribution (%) Contribution (%)
Breastfeeding 0.01 -0.0042 0.54 0.54
Age of child     -8.14
   6–12 months 0.22 0.0049 -0.10  
   > 12 months 0.86 0.0154 -8.04  
Size of child     2.01
   Size large -0.12 0.0170 0.65  
   Size small 0.18 -0.0500 0.82  
   Size very small 0.26 -0.0401 0.54  
Sex of child 0.23 -0.0101 0.92 0.92
Region     23.07
   Upper -0.59 -0.2123 -8.29  
   Middle -0.38 0.1169 10.34  
   South -0.52 -0.0425 -6.68  
   Accra -0.73 0.4390 27.70  
Urban -0.11 0.3153 8.95 8.95
Wealth     30.85
   Middle -0.04 0.1055 1.13  
   Rich -0.18 0.7120 29.71  
Toilet -0.10 0.1159 6.71 6.71
Water 0.02 0.0690 -0.72 -0.72
Twoplus 0.11 -0.0469 2.41 2.41
Riskintb 0.19 0.0440 -0.66 -0.66
Married -0.03 0.0180 0.35 0.35
Mother's education     5.51
   No or incomplete 0.33 -0.1578 22.99  
   Primary 0.36 0.1549 -17.48  
Health services index     18.32
   Healthmod -0.02 -0.0525 -0.20  
   Healthhigh -0.32 0.2204 18.52  
Mother's age at birth     1.29
   <20 0.13 -0.1133 1.26  
   >39 0.00 -0.1035 0.03  
Mother's occupation     2.90
   Prof, tech, man, cler, sales, service -0.13 0.2194 7.40  
   Agriculture -0.07 -0.1884 -4.90  
   Manual -0.07 0.0505 0.40  
Constant 1.03    
Error   -0.0045 5.70 5.70
Total    100.00 100.00
  1. The dependent variable in the regression is the (negative) height-for-age z-score (based upon the WHO reference population). Number of observations = 3061, C of dependent variable = -0.079. Bold numbers indicate significance at the 10% level (based upon bootstrapped standard errors).