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. 2008 Apr 23;2008(2):CD003432. doi: 10.1002/14651858.CD003432.pub2

Winslow 2002.

Methods RCT 
 Single centre 
 No sample size calculation 
 Preoperative randomisation 
 Number of patients not randomised: unclear 
 Conversion rate 15% 
 Conversions were analysed in the open arm of the trial 
 Follow‐up 30.1 months (mean)
Participants n=37 
 Inclusion criteria: adenocarcinoma of the right, left, or sigmoid colon, 18 years of age or older, able to participate in close follow‐up evaluations postoperatively 
 Exclusion criteria: prohibitive scars from previous abdominal surgery, advanced local disease, stage IV colon cancer, rectal cancer, acutely perforated or obstructing cancers, cancers of the transverse colon, ASA IV or V, associated gastrointestinal diseases requiring extensive operative intervention, concurrent or previous malignant tumour within 5 years (excl. non melanoma skin cancer), pregnancy 
 Six patients were lost to follow‐up.
Interventions Laparoscopic vs open 
 Tumour location: right, left, or sigmoid colon 
 Adj. therapy: postoperative chemotherapy according to tumour stage and other patient‐related factors, no postoperative radiation 
 Type of resection: Right or left hemicolectomy, sigmoidectomy
Outcomes Adjuvant therapy, tumor localisation, duration of follow‐up, incidence of incisional hernia, reoperations for incisional hernia
Notes Halpern and 
 Preston 
 quality score: 15 out of 22
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Unclear risk B ‐ Unclear