Variable | (1) | (2) | (3) | (4) |
---|---|---|---|---|
old = 0 | old = 1 | old = 2 | old > 2 | |
con | −2.352b (− 8.39) | −2.696b (− 3.29) | −2.686 (− 1.41) | −2.796a (− 2.26) |
Control variable | yes | yes | yes | yes |
Weak IV test | 151.7 | 19.1 | 2.99 | 5.55 |
Sargan P-value | 0.1320 | 0.7824 | 0.0000 | 0.0046 |
Sample size | 11,984 | 6013 | 5070 | 4197 |