Critical appraisal:Navaneethan U, Kochhar G, Venkatesh PG, Lewis B, Lashner BA, Remzi FH, et al 2012

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Risk of bias assessment: cohort study

Subject selection
"New technology" group
Selected group
Comparison group
Selected group
Comparability of groups on demographic characteristics and clinical features
Not comparable but adjusted analysis used
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
Moderate 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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Navaneethan U, Kochhar G, Venkatesh PG, Lewis B, Lashner BA, Remzi FH, et al. Duration and severity of primary sclerosing cholangitis is not associated with risk of neoplastic changes in the colon in patients with ulcerative colitis. Gastrointest Endosc 2012 May;75(5):1045-1054.e1 Available from:
Assigned to
Topic area
Guidelines:Colorectal cancer/Colonoscopy surveillance
Clinical question
Form:Quality appraisal cohort
Colorectal Cancer risk

Section below only relevant for Cancer Council Project Officer

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