Sample size calculations for educational interventions: principles and methods
نویسندگان
چکیده
منابع مشابه
Sample size calculations: basic principles and common pitfalls.
One of the most common requests that statisticians get from investigators are sample size calculations or sample size justifications. The sample size is the number of patients or other experimental units included in a study, and determining the sample size required to answer the research question is one of the first steps in designing a study. Although most statistical textbooks describe techni...
متن کاملCME Series Sample size calculations: basic principles and common pitfalls
One of the most common requests that statisticians get from investigators are sample size calculations or sample size justifications. The sample size is the number of patients or other experimental units included in a study, and determining the sample size required to answer the research question is one of the first steps in designing a study. Although most statistical textbooks describe techni...
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Interactions measured on the additive scale are more relevant than multiplicative interaction for assessing public health importance and also more closely related to notions of mechanistic synergism. Most work on sample size and power calculations for interaction have focused on the multiplicative scale. Here we derive analytic expressions for sample size and power calculations for interactions...
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In recent years, researchers in the psychosocial and biomedical sciences have become increasingly aware of the importance of sample-size calculations in the design of research projects. Such considerations are, however, rarely applied for studies involving agreement of raters. Published results on this topic are limited and generally provide rather complex formulas. In addition, they generally ...
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ژورنال
عنوان ژورنال: Canadian Journal of Anesthesia/Journal canadien d'anesthésie
سال: 2019
ISSN: 0832-610X,1496-8975
DOI: 10.1007/s12630-019-01405-9