| Meta‐analysis of hazard ratios for death in the laparoscopic group | ||||
|---|---|---|---|---|
| Study | Hazard ratio (HR) | Ln(HRi) | Var(Ln(HRi)) | |
| COST 2004 | 0.91 | ‐0.094 | 0.022 | |
| Lacy 2002 | 0.77 | ‐0.261 | 0.036 | |
| Leung 2004 | 1.01 | 0.0085 | 0.051 | |
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