| Courage for improvement_degree | Courage for improvement_indegree | Courage for improvement_status | Courage for improvement_pagerank | Courage for improvement_authority | |
| Gender (male = 0, female = 1) | 0.114 | 0.286(*) | 0.268(*) | 0.270(*) | 0.167 |
| 0.364 | 0.020 | 0.030 | 0.028 | 0.180 | |
| Height | −0.222 | −0.310(*) | −0.313(*) | −0.317(*) | −0.220 |
| 0.138 | 0.036 | 0.034 | 0.032 | 0.142 | |
| Weight | −0.194 | −0.385(**) | −0.387(**) | −0.373(*) | −0.294(*) |
| 0.197 | 0.008 | 0.008 | 0.011 | 0.047 | |
| Average grade in courses up to now | 0.188 | 0.384(*) | 0.380(*) | 0.496(**) | 0.167 |
| 0.233 | 0.012 | 0.013 | 0.001 | 0.291 | |
| Have traveled for sport reasons | −0.087 | −0.265 | −0.295(*) | −0.280 | −0.212 |
| 0.564 | 0.075 | 0.047 | 0.059 | 0.156 | |
| Inspire interest to other students for the courses | 0.307(*) | 0.114 | 0.171 | 0.142 | 0.048 |
| 0.038 | 0.449 | 0.257 | 0.347 | 0.752 |