| Predictors | Mediator | Outcomes | |
| Individual safety proficiency | Recordable injuries | Lost time injuries | |
| System of safety management practices | 0.668** | −0.185 | −0.175 |
| Individual safety proficiency | NA | −0.325* | −0.320* |
| Adjusted R² | 0.446 | 0.196 | 0.160 |