Results 11 to 20 of about 690,202 (278)
Sample size calculation for prevalence studies using Scalex and ScalaR calculators [PDF]
BMC Medical Research Methodology, 2022 Background Although books and articles guiding the methods of sample size calculation for prevalence studies are available, we aim to guide, assist and report sample size calculation using the present calculators.
Lin Naing +3 more
doaj +2 more sources
Sample size calculation in multi-centre clinical trials [PDF]
BMC Medical Research Methodology, 2018 Background Multi-centre randomized controlled clinical trials play an important role in modern evidence-based medicine. Advantages of collecting data from more than one site are numerous, including accelerated recruitment and increased generalisability ...
Markus Harden, Tim Friede
doaj +2 more sources
Power and sample size calculation for stepped-wedge designs with discrete outcomes [PDF]
Trials, 2021 Background Stepped-wedge designs (SWD) are increasingly used to evaluate the impact of changes to the process of care within health care systems. However, to generate definitive evidence, a correct sample size calculation is crucial to ensure such ...
Fan Xia +3 more
doaj +2 more sources
The research protocol V: The calculation of sample size
Revista Alergia México, 2017 Sample size refers to the number of participants to be included in a research study. If the calculation is carried out properly, not only conclusions will be established with statistical support and the potential risks to the subjects included in the ...
Mario Enrique Rendón-Macías +1 more
doaj +2 more sources
A practical approach to sample size calculation for fixed populations [PDF]
Contemporary Clinical Trials Communications, 2019 Researchers routinely compute desired sample sizes of clinical trials to control type-i and type-ii errors. While for many experimental designs sample size calculations are well-known, it remains an active area of research.
Maurits Kaptein
doaj +2 more sources
Sample size calculation for randomized selection trials with a time-to-event endpoint and a margin of practical equivalence. [PDF]
Stat Med, 2022 Dehbi HM, Embleton-Thirsk A, McCaw ZR.
europepmc +2 more sources
Reviewing research reporting in randomised controlled trials – the sample size calculation [PDF]
Indian Journal of AnaesthesiaVenkata Ganesh, Neeru Sahni
doaj +2 more sources
Sample Size Calculations [PDF]
Nephron Clinical Practice, 2011 The sample size is the number of patients or other experimental units that need to be included in a study to answer the research question. Pre-study calculation of the sample size is important; if a sample size is too small, one will not be able to detect an effect, while a sample that is too large may be a waste of time and money. Methods to calculate
Noordzij, M. +3 more
openaire +6 more sources