| Model | Unstandardized coefficients | Standard error | Standardized coefficient | t | Sig. |
| Constant | 0.114 | 0.025 |
| 4.542 | 0.000 |
| Internal financing rate | 0.037 | 0.015 | 0.109 | 2.420 | 0.016 |
| External financing rate | −0.094 | 0.032 | −0.132 | −2.930 | 0.004 |