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Indices of immune function before and after surgeries (x̄ ± s).
| Group | Time | IgG (g/L) | CD4/CD8 |
|---|---|---|---|
| Control group (n=33) | Before | 7.96 ± 2.29 | 1.91 ± 0.69 |
| After | 13.89 ± 2.01 | 1.56 ± 0.58 | |
| t | 3.852 | 7.452 | |
| P | <0.05 | <0.05 | |
| Observation group (n=33) | Before | 7.95 ± 2.27 | 1.89 ± 0.71 |
| After | 8.12 ± 2.42 | 1.64 ± 0.59 | |
| t | 1.642 | 4.785 | |
| P | >0.05 | <0.05 | |
| ta | 0.852 | 0.694 | |
| P | >0.05 | >0.05 | |
| tb | 3.659 | 3.211 | |
| P | <0.05 | <0.05 |
