Group | Number of cases | Pre-intervention | Post-intervention |
Control group | 50 | 58.27 ± 11.93 | 61.22 ± 9.26 |
Observation group | 50 | 58.62 ± 11.67 | 67.88 ± 10.11 |
t |
| −0.77 | 0.35 |
P |
| −2.370 | 0.027 |