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Results of the panel data regression analysis for different variables.
| Socioeconomic factor | Whole region Coeff. | Eastern region Coeff. | Central region Coeff. | Western region Coeff. |
|---|---|---|---|---|
| GDP | 0.0634*** | 0.0705*** | −0.0684 | −0.00215 |
| Population | −0.529*** | −0.862*** | −0.297 | −0.0889 |
| Number of college students | 24.01*** | 41.98*** | 56.23*** | 14.20** |
Coeff., correlation coefficient;
p <0.01;
p <0.05.
