| Control Variables | Travel distance | Number of bus routes | Number of intersections | The distance to the nearest bus stop | Way to travel | ||
| Professional & Monthly income & Do you own a car | Travel distance | Correlation | 1.000 | −0.247 | −0.212 | −0.129 | 0.643 |
| Significance (2-tailed) | . | 0.000 | 0.000 | 0.000 | 0.000 | ||
| df | 0 | 742 | 742 | 742 | 742 | ||
| Number of bus routes | Correlation | −0.247 | 1.000 | 0.603 | 0.434 | 0.021 | |
| Significance (2-tailed) | 0.000 | . | 0.000 | 0.000 | 0.566 | ||
| df | 742 | 0 | 742 | 742 | 742 | ||
| Number of intersections | Correlation | −0.212 | 0.603 | 1.000 | 0.229 | −0.003 | |
| Significance (2-tailed) | 0.000 | 0.000 | . | 0.000 | 0.933 | ||
| df | 742 | 742 | 0 | 742 | 742 | ||
| The distance to the nearest bus stop | Correlation | −0.129 | 0.434 | 0.229 | 1.000 | −0.008 | |
| Significance (2-tailed) | 0.000 | 0.000 | 0.000 | . | 0.818 | ||
| df | 742 | 742 | 742 | 0 | 742 | ||
| Way to travel | Correlation | 0.643 | 0.021 | −0.003 | −0.008 | 1.000 | |
| Significance (2-tailed) | 0.000 | 0.566 | 0.933 | 0.818 | . | ||
| df | 742 | 742 | 742 | 742 | 0 | ||