Table 3. Results of the meta-analysis regarding perioperative outcome.
| Perioperative outcome | No. of studies | OR/WMD | P value | 95%CI | I2(%) |
|---|---|---|---|---|---|
| Surgical outcomes | |||||
| Operation time | 7 | 45.90 | 0.0001 | 8.03,88.37 | 86 |
| Blood loss | 5 | -185.47 | 0.010 | -326.48,44.45 | 93 |
| Blood transfusion | 5 | 0.83 | 0.62 | 1.41,1.70 | 39 |
| Spleen-preservation rate | 6 | 3.01 | 0.0001 | 1.92,4.73 | 2 |
| Conversion rate | 7 | 0.69 | 0.44 | 0.27,1.77 | 50 |
| R0 resection rate | 5 | 6.55 | 0.10 | 0.70,60.92 | 0 |
| Lymph nodes harvested | 5 | 1.94 | 0.22 | -1.15,5.03 | 91 |
| Postoperative outcomes | |||||
| Overall complications | 7 | 0.83 | 0.35 | 0.57,1.22 | 0 |
| Severe complications | 5 | 1.62 | 0.07 | 0.96,2.72 | 28 |
| Pancreatic fistula | 6 | 0.92 | 0.71 | 0.58,1.45 | 0 |
| Severe pancreatic fistula | 4 | 1.07 | 0.86 | 0.53,2.07 | 0 |
| ICU stay | 2 | 0.89 | 0.85 | 0.27,2.98 | 0 |
| 30-day mortality | 7 | 0.51 | 0.35 | 0.12,2.12 | 0 |
| Hospital stay | 2 | -1.14 | 0.01 | -2.06,-0.23 | 49 |
| Total cost | 2 | 0.90 | 0.68 | -3.38,5.51 | 98 |
OR: odds ratios; WMD: weighted mean difference