Critical appraisal:Lim SG, Lee KJ, Suh KW, Oh SY, Kim SS, Yoo JH, et al 2013

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Risk of bias assessment: cohort study

Subject selection
"New technology" group
Representative of eligible patients.
Comparison group
Representative of eligible patients
Comparability of groups on demographic characteristics and clinical features
Measurement of outcomes
Outcome measures blind to technology used
No, but objective measures used
Same method of measurement used across comparison groups
Completeness of follow-up
Was follow-up complete and were all patients included in the analysis?
Yes (follow-up >95%) or survival analysis using all patients
Overall risk of bias
Low risk of bias Additional comments: Please replace this text and include any additional comments in regards to your risk of bias rating

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Lim SG, Lee KJ, Suh KW, Oh SY, Kim SS, Yoo JH, et al. Preoperative colonoscopy for detection of synchronous neoplasms after insertion of self-expandable metal stents in occlusive colorectal cancer: comparison of covered and uncovered stents. Gut Liver 2013 May;7(3):311-6 Available from:
Assigned to
Topic area
Guidelines:Colorectal cancer/Colonoscopy surveillance
Clinical question
Form:Quality appraisal cohort
Successfully completed preoperative colonoscopy, Synchronous lesions during preoperative colonoscopy (adenomas, HGD, cancer)

Section below only relevant for Cancer Council Project Officer

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