1.12. Analysis.
Comparison 1 Laparoscopic versus open transhiatal oesophagectomy, Outcome 12 Number of lymph nodes harvested.
| Number of lymph nodes harvested | ||||
|---|---|---|---|---|
| Study | Number of harvested lymph nodes in laparoscopic oesophagectomy (measure) | Number of harvested lymph nodes in open oesophagectomy (measure) | Difference in mean or median | Statistical significance |
| Cash 2014 | 24 (median) | 36 (median) | ‐12 | The statistical significance was not clear since the P value presented in this study was for the comparison of three groups (only two of which were eligible for this review). |
| Ecker 2015 | 14 (median) | 16 (median) | ‐2 | Not statistically significant |
| Maas 2012 | 14 (median) | 11 (median) | 3 | Not statistically significant |
| Saha 2009 | 15 (median) | 16 (median) | ‐1 | Statistical significance was not stated |
| Valenti 2008 | 18 (mean) | 19 (mean) | ‐1 | Not statistically significant |