Group | Total cases (n) | Very satisfied (n/%) | Satisfied (n/%) | General (n/%) | Unsatisfied (n/%) | Satisfaction rate |
---|---|---|---|---|---|---|
Pre optimization group | 959 | 556/57.98 | 349/36.40 | 23/2.40 | 31/3.23 | 94.37 |
Post optimization group | 1011 | 699/69.14 | 295/29.17 | 8/0.79 | 9/0.89 | 98.32 |
χ2 | – | 16.234 | 8.517 | 12.054 | 13.409 | 20.973 |
P | – | < 0.001 | 0.032 | < 0.001 | < 0.001 | < 0.001 |