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Total 2 documents matching your query.

1. Calculate CI of rate (person time) (score: 1)
Author: Blas Armien <blasarmien@yahoo.com.mx>
Date: Sun, 18 May 2008 15:13:21 -0700 (PDT)
Hi. I would like to know if you have a command to calculate the confidence intervals of the rate (Person Time) and to compare and to determine statistical differents between two rates. Any help is mu
/archives/html/s-news/2008-05/msg00014.html (6,757 bytes)

2. Re: Calculate CI of rate (person time) (score: 1)
Author: Terry Therneau <therneau@mayo.edu>
Date: Mon, 19 May 2008 10:27:04 -0500 (CDT)
A simple way is to use poisson regression via glm. Here is a dummy data set: event time group 1 12 100 1 2 28 200 2 3 29 100 3 family=poisson) Coefficients: Value Std. Error t value Pr(>|t|) (Interc
/archives/html/s-news/2008-05/msg00016.html (7,978 bytes)


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