I've found the "surveillance" package useful for monitoring walk-in
clinic visits in our county as the influenza pandemic evolved. It might
serve your needs for monitoring IFI (invasive fungal infections?) in
your hospital.
--Chris
Christopher W. Ryan, MD
SUNY Upstate Medical University Clinical Campus at Binghamton
425 Robinson Street, Binghamton, NY 13904
cryanatbinghamtondotedu
"If you want to build a ship, don't drum up the men to gather wood,
divide the work and give orders. Instead, teach them to yearn for the
vast and endless sea." [Antoine de St. Exupery]
Achim Zeileis wrote:
On Sun, 7 Mar 2010, sdzhangping wrote:
Dear friends:
I have just read an article entitled " Monitoring of nosocomial
invasive aspergillosis and early evidence of an outbreak using
cumulative sum tests (CUSUM)", which is published in "Clinical
Microbiology and Infection". We have great need to estimate the
fluctuation of incidence of IFI in our hospital. But I don't know the
details of the stastical method and don't know where can I get a
"Cusum" package. Can you give me some materials about Cusum test? An
example is more appreciated.
There are many techniques with the label CUSUM and I didn't look up what
the specific meaning is in the article you cite. There are tests based
on (mostly linear) regression models with that label, many (but not all
conceivable) of these are implemented in the "strucchange" package. See
vignette("strucchange-intro", package = "strucchange")
as well as
citation("strucchange")
for pointers to papers explaining the ideas behind it. But beyond that
there are also other techniques, in particular from statistical process
control. See the "spc", "qcc", "IQCC" packages among others.
hth,
Z
Yours sincerely Ping Zhang
March 7, 2010
[[alternative HTML version deleted]]
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