Table 4 Placebo test.
From: Effects of global trade integration on skill polarization and wage disparity
Variable | (1) edutimet | (2) highedurt | (3) Sharep31t | (4) Shares45t |
|---|---|---|---|---|
\(\mathop{\Delta }\limits^{\frown {}}\)1t−1 | 0.0091 (0.0214) | 0.0004 (0.0016) | −0.4076 (0.4566) | −0.0441 (0.2006) |
\(\mathop{\Delta }\limits^{\frown {}}\)2t−1 | −0.0055 (0.135) | 0.0004 (0.0010) | 0.1607* (0.0959) | 0.1161 (0.1270) |
Urban fixed effect | Yes | Yes | Yes | Yes |
Year fixed effect | Yes | Yes | Yes | Yes |
Observations | 665 | 665 | 665 | 665 |
Adjusted R square | 0.4154 | 0.3785 | 0.1361 | 0.0900 |
