Group | Number of cases | Pre-intervention | Post-intervention |
Control group | 30 | 7.12 ± 1.68 | 5.98 ± 1.59 |
30 Observation group | 6.84 ± 1.72 | 2.56 ± 1.42 | |
t value | 0.987 | 11.285 | |
P value | 0.429 | 0.000 |