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| Outcome | No. trials | Pooled mean difference (95% CI) | Heterogeneity (I2%) | P |
|---|---|---|---|---|
| LOS | 9 | −0.960 (−1.737, −0.182) | 97.4% | 0.016 |
| Duration air leak | 9 | −1.152 (−1.774, −0.529) | 95.3% | <0.001 |
| Duration of chest drainage tube | 7 | −1.093 (−1.612, −0.573) | 89.9% | <0.001 |
RCTs, randomized controlled trials; LOS, length of hospital stay; 95% CI, 95% confidence interval.
