| Variable | Y | RD | PPI |
| Y | 1.000 |
|
|
| RD | 0.930*** | 1.000 |
|
| PPI | 0.191*** | 0.152*** | 1.000 |
| INNO | 0.940*** | 0.186*** | 0.186*** |
| MAR | 0.562*** | 0.476*** | 0.192*** |
| RDP | 0.957*** | 0.782*** | 0.173*** |
| HUM | 0.004*** | 0.007*** | 0.192*** |
| FIN | 0.295*** | 0.125*** | 0.203*** |