Dear Allstaters,
I hope some of you are interested in an RSS Local Group Seminar to be
held in Leeds this week.
All Welcome!
Regards, Robert.
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Dr Robert G. Aykroyd,
Hon Secretary, RSS Leeds/Bradford Local Group,
Department of Statistics,
University of Leeds,
LEEDS, LS2 9JT, UK.
Wednesday 14th January 2004
Martin Bland (University of York)
Cluster randomised trials in the medical literature
If a cluster-randomised trial is analysed without recognition of the
clustering, the analysis will ignore the possible correlation between
members of the same cluster. When positively correlated observations
are treated as independent, the result may be standard errors which are
too small, confidence intervals which are too narrow, and p-values
which are too small, leading to conclusions which may be false. I
shall describe the analysis of some published trials and give a biased
and partial review of the history and current situation.
The Meeting will be in LT15 Roger Stevens Building on the main campus
of the University of Leeds, starting at 4pm, with refreshments from
3:30pm on Level 9 in the School of Mathematics, University of Leeds.
School of Mathematics
http://www.maths.leeds.ac.uk/school/contacts/maths-map.gif
University of Leeds
http://tldynamic.leeds.ac.uk/leisure/city_centre.htm
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