Concepedia

A simple formula for the calculation of sample size in pilot studies

Wolfgang Viechtbauer, Luc Smits, Daniel Kotz, Luc Budé, Mark Spigt, Jan Serroyen, Rik Crutzen

Journal of Clinical Epidemiology · 2015 · 637 citations · 11 references

Open access

Concepts

Public HealthBiostatisticsExperimental DesignStatisticsPower AnalysisSample SizeSampling DesignSampling MethodsSampling TheoryStatistical AnalysisPilot Sample SelectionPilot Study DesignPilot Study Sample SizePilot TrialsSample Size CalculationSample Size EstimationSample Size Justification

References

11

A tutorial on pilot studies: the what, why and how

Lehana Thabane, Jinhui Ma, Rong Chu et al. · BMC Medical Research Methodology · 2010 · 3.4K citations · Full text

Pharmacy, Pharmacology, Clinical Pharmacology +16

Sample size of 12 per group rule of thumb for a pilot study

Steven A. Julious · Pharmaceutical Statistics · 2005 · 3.1K citations

Public Health, Biostatistics, Clinical Trial Regulation +16

If nothing goes wrong, is everything all right? Interpreting zero numerators

J. A. Hanley · JAMA · 1983 · 1.1K citations

Natural Sciences, Mathematics, Number Theory +1

The size of a pilot study for a clinical trial should be calculated in relation to considerations of precision and efficiency

Julius Sim, Martyn Lewis · Journal of Clinical Epidemiology · 2011 · 1.1K citations

Public Health, Biostatistics, Experimental Design +11

On the use of a pilot sample for sample size determination

Richard Browne · Statistics in Medicine · 1995 · 1K citations

Public Health, Biostatistics, Experimental Design +16