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st: RE: RE: Poisson Rates
If you look at number of injuries divided by hours worked, any values
will be truncated by Poisson regression and be incorrect. If you use
regress, you may be OK, but the distribution is probably wrong.
Tony
Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, January 13, 2009 12:33 AM
To: [email protected]
Cc: Lachenbruch, Peter
Subject: st: RE: Poisson Rates
How does the interpretation of using exposure() compare with the
outcome of dividing the number of predicted injuries by the number of
hours worked for each experience group?
My goal is to plot the results of rate on the y-axis and experience on
the x-axis with curves representing the various levels of age.
Thanks,
Jason
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