Comparison of immune function between the two groups
Before surgery, there was no difference in CD4+, CD3 + and CD4+/CD8 + levels between the two groups (P > 0.05); 1 week after surgery, CD4+, CD3 + and CD4+/CD8 + levels decreased in both groups, and CD4+, CD3 + and CD4+/CD8 + levels in the study group were significantly higher than those in the control group (P < 0.05), see Table 
Comparison of immune function between the two groups