Research, Policy and Practice
Table 8 Comparison of the three matching estimates by performance criteria
Matching estimator | Performance criteria | ||
|---|---|---|---|
Balancing testa | Pseudo-R 2 | Matched sample size | |
NN | |||
1 neighbour | 8 | 0.109 | 440 |
2 neighbour | 8 | 0.082 | 440 |
3 neighbour | 9 | 0.067 | 440 |
4 neighbour | 10 | 0.064 | 440 |
Caliper | |||
0.01 | 12 | 0.038 | 396 |
0.25 | 12 | 0.055 | 440 |
0.5 | 7 | 0.134 | 440 |
KM | |||
With no bandwidth | 13 | 0.033 | 440 |
Bandwidth of 0.1 | 11 | 0.042 | 440 |
Bandwidth of 0.25 | 11 | 0.050 | 440 |
Bandwidth of 0.5 | 8 | 0.084 | 440 |