Table 4 Income levels and willingness: blinder-oaxaca decomposition and counterfactual analysis
| Willingness | Coef. | Robust Std. Err. | z | P > |z| | [95% Conf. Interval] |
|---|---|---|---|---|---|
| Overall | |||||
| Low Income | .2701525 | .0146612 | 18.43 | 0.000 | .2414171 .2988879 |
| High Income | .5013123 | .0256303 | 19.56 | 0.000 | .4510779 .5515468 |
| Difference | −.2311598 | .0295273 | −7.83 | 0.000 | −.2890323 -.1732874 |
| Explained | −.0400858 | .0140411 | −2.85 | 0.004 | −.0676059 -.0125657 |
| Unexplained | −.191074 | .0315304 | −6.06 | 0.000 | −.2528724 -.1292756 |