Abstract
In the first article in the series I explained the importance of study design and gave an overview of the main types of design. Here, I describe the ways in which the results of a study may deviate from the truth and the measures that can be taken to help minimise this when designing a study.
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Levin, K. Study design II. Issues of chance, bias, confounding and contamination. Evid Based Dent 6, 102–103 (2005). https://doi.org/10.1038/sj.ebd.6400356
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DOI: https://doi.org/10.1038/sj.ebd.6400356
