On Nov 1, 2008, at 10:32 AM, hadley wickham wrote:
On Fri, Oct 31, 2008 at 11:25 AM, Philip Twumasi-Ankrah
<[EMAIL PROTECTED]> wrote:
Hi friends,
I need suggestions/directions on how to producing a waterfall plot
for present extend of change in tumour size for a set of
respondents in a study. Example of use of waterfall plot is in the
following slides presented at ASCO 2007 by Axel Grothey. Link is
http://media.asco.org/player/default.aspx?LectureID=AG265&conferenceFolder=GI2007&SessionFolder=Poster&slideonly=yes&TrackID=N929&LectureTitle=Waterfall%20plots%20provide%20detailed%20information%20on%20magnitude%20of%20response%20to%20conventional%20chemotherapy%20in%20colorectal%20cancer%3a%20Lessons%20learned%20from%20N9741.&Key=vm_45_3_26_265&SpeakerName=%3b%20Presenter%3a%20Axel%20Grothey%2c%20MD&mediaURL=%2fmedia&ServerName=media.asco.org&max=12&ext=jpg&useASX=false&playtype=&playtype=&playtype=
,
The link is pretty long but it takes you right to the presentation.
Is this really an effective means of describing the distribution of
percent change in tumour size? Wouldn't a histogram display the
distribution more effectively?
Isn't it just a CDF rotated 90 degrees to clockwise?
--
DavidWinsemius
Hadley
--
http://had.co.nz/
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