review Open AccessTop 10% cited
Statistics review 4: sample size calculations.
Critical Care · 2002 · Vol. 6(4) · pp. 335–335
Elise Whitley✉(University of Bristol)Jonathan Ball(St George's Hospital)
Abstract
The present review introduces the notion of statistical power and the hazard of under-powered studies. The problem of how to calculate an ideal sample size is also discussed within the context of factors that affect power, and specific methods for the calculation of sample size are presented for two common scenarios, along with extensions to the simplest case.
Healthcare Technology and Patient MonitoringSepsis Diagnosis and TreatmentHeart Rate Variability and Autonomic ControlSample size determinationMedicineStatisticsContext (archaeology)Sample (material)Statistical powerIdeal (ethics)EconometricsMathematicsEpistemology
MeSH terms
Clinical Trials as TopicHumansResearch DesignRespiratory Distress SyndromeShock, SepticStatistics as TopicSample Size
Citations
582
FWCI
2.62
field-weighted impact
References
14
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90%
vs. same field & year
Citations per year
References
Early Goal-Directed Therapy in the Treatment of Severe Sepsis and Septic Shock
New England Journal of Medicine · 2001 · 10,728 citations
Ventilation with Lower Tidal Volumes as Compared with Traditional Tidal Volumes for Acute Lung Injury and the Acute Respiratory Distress Syndrome
New England Journal of Medicine · 2000 · 12,769 citations
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Biometrics · 1992 · 11,721 citations
Practical Statistics for Medical Research.
Journal of the American Statistical Association · 1992 · 4,865 citations
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