Critical appraisal:Zeman M, Maciejewski A, Półtorak S, Kryj M 2013 2

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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
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?
No or not described
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


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Article
Zeman M, Maciejewski A, Półtorak S, Kryj M. Evaluation of outcomes and treatment safety of patients with metastatic colorectal cancer to the liver with estimation of prognostic factors. Pol Przegl Chir 2013 Jun;85(6):333-9 Available from: http://www.ncbi.nlm.nih.gov/pubmed/23828415.
Assigned to
User:Verity.chadwick
Topic area
Guidelines:Colorectal cancer
Clinical question
Form
Form:Quality appraisal cohort


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