Figure 4.

Comparison of sleep quality. There was no significant difference in sleep quality scores between the control group and the observation group before treatment, after 1, 2 and 3 months of treatment, and 2 months after completion of treatment (P>0.05). Compared with those before treatment, both the observation group (A) and the control group (B) exhibited lower sleep quality scores after 2 and 3 months of treatment and 2 months after completion of treatment (P<0.05). *P<0.05 indicates the comparison between the two groups at different times, P<0.05.