Intended for healthcare professionals

Research Methods & Reporting Statistics Notes

Comparisons within randomised groups can be very misleading

BMJ 2011; 342 doi: https://doi.org/10.1136/bmj.d561 (Published 06 May 2011) Cite this as: BMJ 2011;342:d561

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May 20112183977566
Jun 2011173155156
Jul 201110810995
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Total374792383844