TITLE

Was the study big enough? Two "cafe" rules

AUTHOR(S)
Glasziou, Paul; Doll, Helen
PUB. DATE
November 2007
SOURCE
ACP Journal Club;Nov/Dec2007, Vol. 147 Issue 3, pA8
SOURCE TYPE
Academic Journal
DOC. TYPE
Editorial
ABSTRACT
The authors' offer their opinion on the magnitude of clinical studies. They opine that small studies do not provide a statistically significant effect. They state that smaller studies are more susceptible to random errors, as compared to longer studies and have tighter CIs. They also discuss the power of research works and describe the sample size requirements for different types of studies.
ACCESSION #
28019852

 

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