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Comment
. 2008 Mar 15;336(7644):573.
doi: 10.1136/bmj.39514.402535.80.

Diabetes education: Selection bias in cluster trial

Comment

Diabetes education: Selection bias in cluster trial

David J Torgerson. BMJ. .
No abstract available

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Conflict of interest statement

Competing interests: None declared.

Comment on

References

    1. Davies MJ, Heller S, Skinner TC, Campbell MJ, Carey ME, Cradock S, et al; on behalf of the Diabetes Education and Self Management for Ongoing and Newly Diagnosed Collaborative. Effectiveness of the diabetes education and self management for ongoing and newly diagnosed (DESMOND) programme for people with newly diagnosed type 2 diabetes: cluster randomised controlled trial. BMJ 2008;336:491-5. (1 March.) - PMC - PubMed
    1. Torgerson DJ. Contamination in trials: Is cluster randomisation the answer? BMJ 2001;322:355-7. - PMC - PubMed
    1. Puffer S, Torgerson DJ, Watson J. Evidence for risk of bias in cluster randomised trials: a review of recent trials published in three general medical journals. BMJ 2003;327:785. - PMC - PubMed

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