Group | n = | Before intervention | After intervention |
Control | 100 | 12.70 ± 3.27 | 19.26 ± 1.12 |
Experimental | 121 | 12.46 ± 3.05 | 19.51 ± 0.96 |
t |
| 0.557 | −1.809 |
P |
| >0.05 | 0.072 |