Group | Control group (n = 94) | Experimental group (n = 106) | t | p |
---|---|---|---|---|
Before treatment | 3.84 ± 0.92 | 3.62 ± 0.84 | 1.758 | 0.080 |
The 3rd month | 4.25 ± 1.20a | 0.53 ± 0.25a | 29.486 | 0.000 |
The 6th month | 4.83 ± 1.26ab | 0.44 ± 0.19ab | 33.435 | 0.000 |
The 12th month | 5.36 ± 1.32abc | 0.29 ± 0.08abc | 37.168 | 0.000 |