| Variables | Value | Chi-Square Tests |
| Age | 13.213 | 0.004 |
| Lack of understanding customer | 2.950 | 0.012 |
| Lack of incentive | 4.528 | 0.001 |
| Communication value | 2.404 | 0.025 |
| Insufficient management | 3.115 | 0.029 |
| Workload | 3.232 | 0.007 |