| Variable |
| Count | Mean | Standard Deviation | Minimum | Maximum |
| Revenue and Costs | lnCost | 3772 | 0.122 | 0.233 | −0.545 | 0.966 |
| lnRev | 3772 | 0.131 | 0.256 | −0.712 | 1.040 | |
| D | 3772 | 0.233 | 0.422 | 0.000 | 1.000 | |
| Supplier relationships (Supply) | SP | 3772 | 0.004 | 0.026 | 0.000 | 0.575 |
| SPSC | 3772 | 0.001 | 0.014 | 0.000 | 0.388 | |
| SC | 3772 | 0.330 | 0.179 | 0.067 | 0.869 | |
| SS | 3772 | 0.151 | 0.110 | 0.012 | 0.549 | |
| Control variables | AI | 3772 | 2.264 | 1.509 | 0.475 | 10.32 |
| EI | 3772 | 0.013 | 0.008 | 0.002 | 0.043 | |
| Dec | 3772 | 0.092 | 0.289 | 0.000 | 1.000 | |
| Inde | 3772 | 0.376 | 0.054 | 0.333 | 0.571 |