| Group | Case | Very satisfied | Satisfied | Dissatisfied | Satisfaction (%) | Total satisfaction |
| Control group | 150 | 94 | 20 | 36 | 76 | 114 (76%) |
| Observation group | 150 | 120 | 18 | 7 | 94 | 138 (92%) |
| χ2 |
|
|
|
|
| 14.29 |
| P |
|
|
|
|
| 0.0002 |