| Group | Number of cases | Gender | Age | |
| Male | Female | |||
| Control group | 54 | 35 | 19 | 6.91 ± 3.33 |
| Treatment group | 56 | 35 | 21 | 4.46 ± 2.62 |
| X2or t | — | 0.0637 | 4.2969 | |
| P | — | 0.8008 | 0.0000 | |