Table 2. Meta-analysis for postoperative data.
| Outcomes | No. of studies | No. of patients | McKeown’s events incidence (%) | Ivor Lewis’s events incidence (%) | WMD/OR (95% CI) | Heterogeneity | Test for overall effect | Favors group |
|---|---|---|---|---|---|---|---|---|
| Reoperations | 4 | 836 | 14.0% | 6.9% | 1.57 (0.98, 2.53) | I2=26%, P=0.25 | Z=1.87, P=0.06 | – |
| Drainage time | 12 | 2,093 | – | – | −0.41 (−1.33, 0.52) | I2=94%, P<0.00001 | Z=0.87, P=0.39 | – |
| Hospital LOS | 20 | 4,331 | – | – | 1.13 (0.45, 1.82) | I2=82%, P<0.00001 | Z=3.23, P=0.001 | Ivor Lewis |
| ICU LOS | 5 | 1,916 | – | – | 0.17 (−1.07, 1.41) | I2=95%, P<0.00001 | Z=0.27, P=0.79 | – |
| Cost | 9 | 1,817 | – | – | −0.40 (−0.74, −0.07) | I2=87%, P<0.00001 | Z=2.37, P=0.02 | McKeown |
| In-hospital mortality | 10 | 2,316 | 2.4% | 0.9% | 2.83 (1.35, 5.93) | I2=0%, P=0.80 | Z=2.75, P=0.006 | Ivor Lewis |
| 30-day mortality | 6 | 2,179 | 3.4% | 1.2% | 2.44 (1.33, 4.50) | I2=2%, P=0.40 | Z=2.86, P=0.004 | Ivor Lewis |
| 90-day mortality | 4 | 919 | 8.9% | 3.2% | 2.85 (1.55, 5.23) | I2=0%, P=0.97 | Z=3.39, P=0.0007 | Ivor Lewis |
| 1-year mortality | 3 | 294 | 9.8% | 9.3% | 1.04 (0.48, 2.27) | I2=0%, P=0.56 | Z=0.11, P=0.92 | – |
WMD, weighted mean difference; OR, odds ratio; CI, confidence interval; LOS, length of stay.