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Sample size: how many participants do I need in my research? (2014). Martínez-Mesa, Duquia, et al.

Discussion in 'Research methodology news and research' started by WillowJ, May 19, 2019.

  1. WillowJ

    WillowJ Senior Member (Voting Rights)

    The importance of estimating sample sizes is rarely understood by researchers, when planning a study. This paper aims to highlight the centrality of sample size estimations in health research. Examples that help in understanding the basic concepts involved in their calculation are presented.

    The scenarios covered are based more on the epidemiological reasoning and less on mathematical formulae. Proper calculation of the number of participants in a study diminishes the likelihood of errors, which are often associated with adverse consequences in terms of economic, ethical and health aspects.

    Keywords: Cross-sectional studies, Dermatology, Epidemiology, Prevalence, Risk factors, Sampling studies

    Free full text: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4148275/

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