A free software package that can simulate Randomized Controlled Clinical Trials (RCTs). With the CTS a user can explore aspects of the design, conduction and analyses of RCTs
Saved once (save)Bookmarked by The Editorial Team on 13 Jul 2010
There has been considerable recent interest in methods of determining sample size for qualitative research a priori, rather than through an adaptive approach such as saturation. Extending previous literature in this area, we identify four distinct approaches to determining sample size in this way: rules of thumb, conceptual models, numerical guidelines derived from empirical studies, and statistical formulae.