Table 9.
Maternal mortality heterogeneous outcome
| Variables | Maternal mortality | |||
|---|---|---|---|---|
| High income | Upper middle income | Lower middle income | Low income | |
| Density of population | -0.447*** | -0.333*** | -1.018*** | -0.967*** |
| (0.0675) | (0.0987) | (0.0631) | (0.0514) | |
| GDP per capita | -1.01e-05*** | -6.31e-05*** | -0.000147*** | -1.83e-05 |
| (1.54e-06) | (4.57e-06) | (1.76e-05) | (3.26e-05) | |
| Current health expenditure per capita | 2.04e-05 | -0.000190*** | 0.000624** | -0.00225*** |
| (1.62e-05) | (2.87e-05) | (0.000276) | (0.000635) | |
| PM2.5 air pollution, mean annual exposure | 0.0309*** | 0.00515*** | -0.00102 | -0.00133 |
| (0.00336) | (0.00195) | (0.00127) | (0.00167) | |
| Constant | 3.955*** | 5.523*** | 9.869*** | 10.13*** |
| (0.304) | (0.393) | (0.263) | (0.203) | |
| Observations | 1,155 | 999 | 1,016 | 459 |
| N | 55 | 48 | 49 | 23 |
| R-squared | 0.290 | 0.415 | 0.529 | 0.668 |
Note: Standard errors in parentheses
*** p < 0.01, ** p < 0.05, * p < 0.1