Dear Allstaters,
Imagine a clinical test with a continuous outcome R(x) which estimates some
random variable RR. The test procedure is in inself a source of
variability, and the distribution of estimates (R) is highly non-normal
(because of a truncated measurement range, digit preference, and all sorts
of other nasty properties).
Clinically, a change in RR is thought to have occured (90% of the time)
when the follow-up estimate R(x+i) falls outside the range delimited by the
5th and 95th percentiles of R.
How would you refer to this interval? Any sources? Other comments?
Thanks
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Paul H Artes | e-mail: [log in to unmask]
Department of Ophthalmology | office tel: (902) 473-3240
Dalhousie University | fax: (902) 473-2839
Halifax, Nova Scotia, CANADA |
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