**Appendix A**

**Table A1.** Correlations between the explanatory variables used in model (1): Pearson product– moment correlation coefficients and significance levels.


Below the diagonal (italicized): *p*-values and significance levels: \*\*\*: *p* < 0.01; \*\*: *p* < 0.05; \*: *p* < 0.10; (): *p* > 0.10. *n* = 30,775; degrees of freedom = 30,773.
