Given that an effect size of d=. 4 is a good first estimate of the smallest effect size of interest
in psychological research, we already need over 50 participants for a simple comparison of …

La enseñanza de la investigación debe abarcar todos los aspectos de su proceso,
involucrando los estudios piloto. En la investigación biomédica, el primer paso en la …

Background Implementation trials aim to test the effects of implementation strategies on the
adoption, integration or uptake of an evidence-based intervention within organisations or …

Background: Pilot studies test the feasibility of methods and procedures to be used in larger-
scale studies. Although numerous articles describe guidelines for the conduct of pilot …

Power analysis is a key component for planning prospective studies such as clinical trials.
However, some journals in biomedical and psychosocial sciences ask for power analysis for …

A pilot study asks whether something can be done, should the researchers proceed with it,
and if so, how. However, a pilot study also has a specific design feature; it is conducted on a …

When designing a study, the planned sample size is often based on power analyses. One
way to choose an effect size for power analyses is by relying on pilot data. A-priori power …

In this article, we highlight the distinctive features of a feasibility study, identify the main
objectives and guiding questions of a feasibility study, and illustrate the use of these …

One of the goals of a pilot study is to identify unforeseen problems, such as ambiguous
inclusion or exclusion criteria or misinterpretations of questionnaire items. Although sample …

Although sample size calculations play an essential role in health research, published
research often fails to report sample size selection. This study aims to explain the …