Table 4 Meta-analysis results of postoperative nutritional status
Measured outcome | Studies | Patients | OR |     95% CI | P | Heterogeneity test | P > |t| | ||
|---|---|---|---|---|---|---|---|---|---|
I2 | P | ||||||||
Albumin | 6 | 513 | 0.139 | − 0.282 | 0.560 | 0.517 | 78.6 | 0.000 | 0.688 |
Hemoglobin | 6 | 513 | − 2.326 | − 4.491 | − 0.160 | 0.035 | 95.3 | 0.000 | 0.344 |
Total protein | 6 | 513 | 0.462 | − 0.664 | 1.588 | 0.422 | 55.1 | 0.000 | 0.209 |
Vitamin B12 | 4 | 442 | − 13.072 | − 22.850 | − 3.294 | 0.009 | 90.4 | 0.000 | 0.771 |
Cholesterol | 4 | 449 | − 0.610 | − 5.863 | 4.644 | 0.820 | 49.0 | 0.000 | 0.927 |
Iron | 3 | 194 | 3.000 | − 25.634 | 31.634 | 0.837 | 56.8 | 0.000 | 0.958 |
Body weight | 6 | 537 | − 3.514 | − 5.579 | − 1.449 | 0.001 | 89.8 | 0.000 | 0.870 |