| Variables | LD | TD | E | PW | PPW | TSW | PPY | DMF |
| LD | - | −0.98** | −0.88* | −0.99** | −0.99** | −0.99** | −0.99** | −0.99** |
| TD |
| - | 0.80ns | 0.99** | 0.99** | 0.99** | 0.99** | 0.99** |
| E |
|
| - | 0.82* | 0.82* | 0.82* | 0.82* | 0.82* |
| PW |
|
|
| - | 0.99** | 0.99** | 0.99** | 0.99** |
| PPW |
|
|
|
| - | 0.99** | 0.99** | 0.99** |
| TSW |
|
|
|
|
| - | 0.99** | 0.99** |
| PPY |
|
|
|
|
|
| - | 0.99** |
| DMF |
|
|
|
|
|
|
| - |