Table 3: Semiparametric regression results: country income groups.

Explanatory variable22 lower income countries20 middle income countries

lnPOP65 0.4757
(0.9736)
0.5772
(0.6849)
lnIMR−0.9653*** 
(0.3252)
−0.7290** 
(0.2938)
Adjusted -square 0.3285 0.5108

The dependent variable is lnHCE. Robust standard errors in parentheses.
*Significant at the 10% level.
**Significant at the 5% level.
***Significant at the 1% level.