Table 6.
Balance test before and after covariable matching.
| Variable | Unmatched | Mean | %bias | %reduct bias | t-test | V(T)/V(C) | ||
|---|---|---|---|---|---|---|---|---|
| Matched | Treated | Control | t | p > t | ||||
| Ind | U | 2.1747 | 2.0311 | 14.8 | 2.72 | 0.007 | 1 | |
| M | 2.173 | 2.2737 | −10.3 | 29.9 | −1.53 | 0.125 | 0.86 | |
|
| ||||||||
| Own | U | 0.76632 | 0.79076 | −5.9 | −1.09 | 0.274 | . | |
| M | 0.76582 | 0.727 | 9.3 | −58.8 | 1.37 | 0.17 | . | |
|
| ||||||||
| Reg | U | 5.7747 | 5.7874 | −0.3 | −0.05 | 0.961 | 0.98 | |
| M | 5.7848 | 6.0593 | −5.7 | −2068.4 | −0.87 | 0.383 | 0.95 | |
|
| ||||||||
| Size | U | 4.90E+09 | 2.70E+09 | 27.5 | 5.27 | 0 | 1.42∗ | |
| M | 4.60E+09 | 3.80E+09 | 10.1 | 63.3 | 1.77 | 0.077 | 0.85 | |
|
| ||||||||
| IIR | U | 0.12716 | 0.15176 | −3.1 | −0.48 | 0.628 | 0.06∗ | |
| M | 0.12686 | 0.12862 | −0.2 | 92.9 | −0.1 | 0.923 | 0.79∗ | |
|
| ||||||||
| ROA | U | 0.05293 | 0.04712 | 7 | 1.21 | 0.226 | 0.49∗ | |
| M | 0.05299 | 0.06321 | −12.4 | −76 | −1.85 | 0.064 | 0.45∗ | |