Critical appraisal:Jørgensen OD, Kronborg O, Fenger C 2002

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Risk of bias assessment: Randomised Controlled Trial (Cochrane risk of bias tool)

Random sequence generation
Describe the method used to generate the allocation sequence in sufficient detail to allow an assessment of whether it should produce comparable groups.Jutta's question mark icon.png
computerised randomisation programme
What was the risk of bias from the random sequence generation?Jutta's question mark icon.png
Low
Allocation concealment
Describe the method used to conceal the allocation sequence in sufficient detail to determine whether intervention allocations could have been foreseen in advance of or during, enrolment.Jutta's question mark icon.png
Central randomised system
What was the risk of bias from the allocation concealment?Jutta's question mark icon.png
Low
Blinding
Describe all measures used, if any, to blind outcome assessors from knowledge of which intervention a participant received. Provide any information relating to whether the intended blinding was effective.Jutta's question mark icon.png
Outcome assessors were blinded to participants screening status.
What was the risk of bias from the blinding of participants and personnel and outcome assessors?Jutta's question mark icon.png
Low
Incomplete outcome data
Describe the completeness of outcome data for each main outcome, including attrition and exlusions from the analysis. State whether attrition and exclusions were reported, the numbers in each intervention group (compared with total randomized participants), reasons for attrition/exclusions where reported, and any re-inclusions in analyses performed by the review authors.Jutta's question mark icon.png
All attrition accounted for (2.3%)
What was the risk of bias from incomplete outcome data?Jutta's question mark icon.png
Low
Selective outcome reporting
State how the possibility of selective outcome reporting was examined by the review authors and what was found.Jutta's question mark icon.png
Death certificates were obtained for all participants.
What was the risk of bias from selective outcome reporting? Assessments should be made for each main outcome (or class of outcomes).Jutta's question mark icon.png
Low
Other sources of bias
Describe any other sources of biasJutta's question mark icon.png
none
What was the risk of bias from other sources?Jutta's question mark icon.png
Low
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


Jutta's tick icon.png This appraisal has been completed.


Article
Jørgensen OD, Kronborg O, Fenger C. A randomised study of screening for colorectal cancer using faecal occult blood testing: results after 13 years and seven biennial screening rounds. Gut 2002 Jan;50(1):29-32 Abstract available at http://www.ncbi.nlm.nih.gov/pubmed/11772963.
Assigned to
User:Albert.chetcuti
Topic area
Guidelines:Colorectal cancer
Clinical question
Form
Form:Quality appraisal rct-cochrane
Outcomes
- Cancer related mortality; - Overall mortality

Section below only relevant for Cancer Council Project Officer

Edit appraisal assignment