Table 3

Cox proportional hazards regression model, scaled Schoenfeld test and stratified Cox proportional regression model for the outcome variable ‘time to first receipt government assistance’

(1)(2)(3)(4)
VariablesCox Proportional Hazards Regression ModelScaled Schoenfeld residual testStratified Cox Regression Model, stratified by household location without interaction termsStratified Cox Regression Model, stratified by household location with interaction terms
HRProb>χ2HRHR
Household location (0=rural, 1=urban)0.582***
(0.104)
0.0128
Gender of household head (0=male, 1=female)2.891***
(0.578)
0.60092.866***
(0.564)
3.001***
(0.752)
Schooling status of the household head (0=attended school, 1=did not attend school)1.051
(0.208)
0.4681.054
(0.207)
0.880
(0.208)
Economic status of the household based on consumption expenditure (0=non-poor, 1=poor)1.718***
(0.326)
0.40611.706***
(0.323)
1.884***
(0.440)
Ratio of number of dependent members to total number of household members1.004
(0.00376)
0.15881.004
(0.00374)
1.002
(0.00485)
Interaction term: household location (0=rural, 1=urban) * gender of household head (0=male, 1=female)0.811
(0.266)
Interaction term: household location (0=rural, 1=urban) * schooling status of the household head (0=attended school, 1=did not attend school)2.259**
(0.724)
Interaction term: household location (0=rural, 1=urban) * economic status of the household based on consumption expenditure (0=non-poor, 1=poor)0.553*
(0.197)
Interaction term: household location (0=rural, 1=urban) * ratio of number of dependent members to total number of household members1.005
(0.00649)
Global test0.0144
Observations324632463246
  • Robust seeform in parentheses: ***p<0.01, **p<0.05, *p<0.1.

  • Based on the Wald test, we rejected the null hypothesis that the coefficients of interaction terms (column 4) are simultaneously equal to zero.

  • χ2 =9.39; Prob>χ2=0.0520.