| Variables | dy/dx | p > z | X |
| Competition 2 | −0.064 (0.015)* | 0.000 | 0.131 |
| Competition 3 | −0.050 (0.015)* | 0.001 | 0.106 |
| Competition 4 | −0.056 (0.015)* | 0.000 | 0.098 |
| Competition 5 | −0.029 (0.015)*** | 0.056 | 0.136 |
| Competition 6 | −0.014 (0.019) | 0.466 | 0.067 |
| Competition 7 | −0.023 (0.021) | 0.276 | 0.046 |
| Competition 8 | −0.007 (0.023) | 0.750 | 0.044 |
| Competition 9 | −0.030 (0.026) | 0.247 | 0.030 |
| Competition is harmful | 0.0022 (0.025) | 0.930 | 0.055 |