RT Journal Article
SR Electronic
T1 An introduction to power and sample size estimation
JF Emergency Medicine Journal
JO Emerg Med J
FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine
SP 453
OP 458
DO 10.1136/emj.20.5.453
VO 20
IS 5
A1 Jones, S R
A1 Carley, S
A1 Harrison, M
YR 2003
UL http://emj.bmj.com/content/20/5/453.abstract
AB The importance of power and sample size estimation for study design and analysis.