Critical appraisal:Choi CH, Rutter MD, Askari A, Lee GH, Warusavitarne J, Moorghen M, et al 2015 2

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

Not comparable and not adjusted for differences

Measurement of outcomes

Outcome measures blind to technology used

No, but objective measures used

Same method of measurement used across comparison groups

Yes

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

High risk of bias

Additional comments: Please replace this text and include any additional comments in regards to your risk of bias rating

This appraisal has been completed.

Article

Choi CH, Rutter MD, Askari A, Lee GH, Warusavitarne J, Moorghen M, et al. Forty-Year Analysis of Colonoscopic Surveillance Program for Neoplasia in Ulcerative Colitis: An Updated Overview. Am J Gastroenterol 2015 Jul;110(7):1022-34 Available from: http://www.ncbi.nlm.nih.gov/pubmed/25823771.

Assigned to

User:Albert.chetcuti

Topic area

Guidelines:Colorectal cancer/Colonoscopy surveillance

Clinical question

• What is the most appropriate time interval for surveillance in IBD patients?

Form

Form:Quality appraisal cohort

Section below only relevant for Cancer Council Project Officer

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