Group | Control group (n = 94) | Experimental group (n = 106) | t | p |
---|---|---|---|---|
Before treatment | 43.40 ± 1.30 | 43.25 ± 1.54 | 0.747 | 0.456 |
The 3rd month | 43.45 ± 1.38 | 40.28 ± 1.23a | 17.058 | 0.000 |
The 6th month | 43.50 ± 1.29 | 39.62 ± 1.12ab | 22.298 | 0.000 |
The 12th month | 43.52 ± 1.42 | 39.38 ± 1.32ab | 21.268 | 0.000 |