Research Article
International Trade of Masks and COVID-19 Pandemic Containment
Table 4
The nonlinear impact of mask imports.
| Recovery rate | (1) | (2) | (3) | (4) | (5) | (6) |
| Increase rate | 0.003 | 0.004 | 0.004 | 0.005 | 0.004 | 0.005 | | (0.001) | (0.001) | (0.002) | (0.002) | (0.002) | (0.002) | Increase rate2 | −0.000 | −0.000 | −0.000 | −0.000 | −0.000 | −0.000 | | (0.000) | (0.000) | (0.000) | (0.000) | (0.000) | (0.000) | Log (per GDP) | | 3.060 | 3.047 | 3.055 | 2.726 | 1.429 | | | (1.004) | (1.784) | (1.797) | (1.860) | (2.324) | Infant mortality | | | −0.006 | −0.009 | −0.019 | 0.084 | | | | (0.118) | (0.116) | (0.118) | (0.211) | Log (population density) | | | | −0.223 | −0.285 | 0.369 | | | | | (0.803) | (0.813) | (1.179) | Log (population) | | | | | −0.590 | −0.140 | | | | | | (0.572) | (0.858) | Education level | | | | | | 0.135 | | | | | | | (0.080) | Obs. | 180 | 176 | 173 | 173 | 173 | 114 | R-squared | 0.022 | 0.086 | 0.085 | 0.085 | 0.088 | 0.074 |
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Significant at 10%. Significant at 5%. Significant at 1%. |