Table 5 Test for selection bias after matching using propensity score test (used kernel for GM)
Variable | Mean | % Bias | % reduction | t-test | ||
|---|---|---|---|---|---|---|
Treated | Control | Bias | t | p > t | ||
Age of main farmer | 52.3060 | 51.7570 | 4.2 | 73.6 | 0.42 | 0.674 |
Education level of main farmer | 1.6224 | 1.5760 | 6.4 | 87.0 | 0.64 | 0.523 |
Farming experience of main farmer | 20.4180 | 20.6820 | − 2.3 | 61.3 | − 0.22 | 0.825 |
Household size | 6.2296 | 6.2300 | 0.0 | 99.9 | 0.00 | 0.999 |
Main occupation of the main farmer | 1.3827 | 1.4353 | − 4.8 | 34.8 | − 0.47 | 0.641 |
Sex of the main farmer | 0.4694 | 0.4798 | − 2.1 | 87.8 | − 0.21 | 0.836 |
Tropical Livestock Unit | 3.6037 | 3.8268 | − 7.2 | 80.5 | − 0.73 | 0.464 |
Group membership | 0.8520 | 0.8478 | 1.1 | 96.0 | 0.12 | 0.907 |
Number of extension services | 2.8878 | 2.9706 | − 4.9 | 73.4 | − 0.46 | 0.644 |
County | 4.8878 | 5.0432 | − 6.1 | 54.6 | − 0.61 | 0.544 |