Table A5.
Matching techniques by matching quality criteria.
| Impact indicators | Matching method | Trainees | Non-trainees | B (absolute standardized mean difference) |
R (variance ratio) |
||
|---|---|---|---|---|---|---|---|
| Unmatched | Matched | Unmatched | Matched | ||||
| Wheat yield (kg ha-1) | Nearest neighbor (n = 1) | 185 | 170 | 60.3∗ | 55.9∗ | 1.16 | 1.37 |
| Kernel (bw = 0.06) | 185 | 170 | 60.3∗ | 14.7 | 1.16 | 1.08 | |
| Radius (0.02) | 185 | 170 | 60.3∗ | 20.5 | 1.16 | 0.81 | |
| Caliper (0.02) |
185 |
170 |
60.3∗ |
44.2∗ |
1.16 |
1.15 |
|
| Net wheat income (birr ha-1) | Nearest neighbor (n = 1) | 183 | 170 | 60.7∗ | 44.6∗ | 1.15 | 1.53 |
| Kernel (bw = 0.06) | 183 | 170 | 60.7∗ | 14.8 | 1.15 | 1.07 | |
| Radius (0.02) | 183 | 170 | 60.7∗ | 19.2 | 1.15 | 1.05 | |
| Caliper (0.02) |
183 |
170 |
60.7∗ |
44.6∗ |
1.15 |
1.53 |
|
| Maize yield (kg ha-1) | Nearest neighbor (n = 1) | 180 | 185 | 61.4∗ | 41.6∗ | 1.17 | 1.60 |
| Kernel (bw = 0.06) | 180 | 185 | 61.4∗ | 12.2 | 1.17 | 1.19 | |
| Radius (0.02) | 180 | 185 | 61.4∗ | 20.3 | 1.17 | 0.96 | |
| Caliper (0.02) |
180 |
185 |
61.4∗ |
41.6∗ |
1.17 |
1.60 |
|
| Net maize income (birr ha-1) | Nearest neighbor (n = 1) | 180 | 185 | 61.4∗ | 41.6∗ | 1.17 | 1.60 |
| Kernel (bw = 0.06) | 180 | 185 | 61.4∗ | 12.2 | 1.17 | 1.19 | |
| Radius (0.02) | 180 | 185 | 61.4∗ | 20.3 | 1.17 | 0.96 | |
| Caliper (0.02) | 180 | 185 | 61.4∗ | 41.6∗ | 1.17 | 1.60 | |
∗ If B>25%, R outside [0.5; 2].
Source: Stata output.