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. 2005 Apr 20;2005(2):CD003145. doi: 10.1002/14651858.CD003145.pub2

Weeks 2002.

Methods RCT 
 sample size calculation; 
 preoperative randomisation; 
 conversions analysed as intention to treat.
Participants n = 449 
 Inclusion: adenocarcinoma involving a single segment. 
 Exclusion: tumor < 5cm previous malignant tumor, transverse or rectal cancer, acute obstructed or perforated cancer, metastatic disease known preoperatively, adhesions, advanced local disease precluding lap. surgery, ASA IV‐V, no malignant disease, non english speaking, no telephone, refused to participate.
Interventions laparoscopic vs. conventional 
 Tumor location: not stated. 
 Conversions: advanced disease 11, positive margins 3, inability to visualize critical structures 10, inability to mobilize colon 4, adhesions 12. 
 Type of resection: not stated. 
 Tumor stage: UICC I 88 vs. 69, 
 UICC II 77 vs. 78, UICC III 57 vs.62, UICC IV 5 vs. 11.
Outcomes Main study criterium: Quality of life. 
 Data given for: pain, hospital stay.
Notes Laparoscopic technique: gas insufflation. 
 Conventional incision: not stated. Anesthesia/Analgesia: not standardized / on demand, i.v., i. m., epidural. 
 Analgetic drugs: not stated. 
 Evans & Pollock: Design 27, Analysis 13, 
 Presentation 15, Total 55.
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Unclear risk B ‐ Unclear