Adaptive sample size determination for the development of clinical prediction models [PDF]
Diagnostic and Prognostic Research, 2021 Background We suggest an adaptive sample size calculation method for developing clinical prediction models, in which model performance is monitored sequentially as new data comes in.
Evangelia Christodoulou +6 more
doaj +5 more sources
Sample size determination with a pilot study [PDF]
PLoS ONE, 2022 We analyse standard confidence intervals for the mean of a finite population, with a view to sample size determination. We first consider a standard method for sample size determination based on the assumption of knowledge of the population variance ...
Ben O’Neill
doaj +4 more sources
Sample size determination: A practical guide for health researchers [PDF]
Journal of General and Family Medicine, 2023 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 importance of sample size calculation and to provide considerations for ...
Alaa Althubaiti
doaj +3 more sources
Sample size determination and power analysis using the G*Power software [PDF]
Journal of Educational Evaluation for Health Professions, 2021 Appropriate sample size calculation and power analysis have become major issues in research and publication processes. However, the complexity and difficulty of calculating sample size and power require broad statistical knowledge, there is a shortage of
Hyun Kang
doaj +3 more sources
Sample size determination for Bayesian ANOVAs with informative hypotheses [PDF]
Frontiers in Psychology, 2022 Researchers can express their expectations with respect to the group means in an ANOVA model through equality and order constrained hypotheses. This paper introduces the R package SSDbain, which can be used to calculate the sample size required to ...
Qianrao Fu +2 more
doaj +3 more sources
Sample size determination for point-of-care COVID-19 diagnostic tests: a Bayesian approach [PDF]
Diagnostic and Prognostic Research, 2023 Background In a pandemic setting, it is critical to evaluate and deploy accurate diagnostic tests rapidly. This relies heavily on the sample size chosen to assess the test accuracy (e.g.
S. Faye Williamson +3 more
doaj +5 more sources
Sample size determination for mediation analysis of longitudinal data [PDF]
BMC Medical Research Methodology, 2018 Background Sample size planning for longitudinal data is crucial when designing mediation studies because sufficient statistical power is not only required in grant applications and peer-reviewed publications, but is essential to reliable research ...
Haitao Pan +3 more
doaj +3 more sources
An elaboration on sample size determination for correlations based on effect sizes and confidence interval width: a guide for researchers [PDF]
Restorative Dentistry & EndodonticsObjectivesThis paper aims to serve as a useful guide for sample size determination for various correlation analyses that are based on effect sizes and confidence interval width.Materials and MethodsSample size determinations are calculated for Pearson’s ...
Mohamad Adam Bujang
doaj +3 more sources
Sample size determination for training set optimization in genomic prediction. [PDF]
Theor Appl Genet, 2023 Key message A practical approach is developed to determine a cost-effective optimal training set for selective phenotyping in a genomic prediction study. An R function is provided to facilitate the application of the approach. Abstract Genomic prediction
Wu PY, Ou JH, Liao CT.
europepmc +2 more sources
A Step-by-Step Process on Sample Size Determination for Medical Research. [PDF]
Malays J Med Sci, 2021 Determination of a minimum sample size required for a study is a major consideration which all researchers are confronted with at the early stage of developing a research protocol.
Bujang MA.
europepmc +2 more sources