Variable | (1) | (2) | (3) | (4) |
---|---|---|---|---|
old = 0 | old = 1 | old = 2 | old > 2 | |
ccr | − 0.7818a (− 3.22) | −0.4291 (− 0.62) | 1.538 (0.86) | 0.2612 (0.26) |
Control variable | yes | yes | yes | yes |
Weak IV test | 151.7 | 19.1 | 2.99 | 5.55 |
Sargan P-value | 0.4996 | 0.8410 | 0.1123 | 0.0731 |
Sample size | 11,984 | 6013 | 5070 | 4197 |