February, 2003
© 2000, 2001, 2003 Scott S. Emerson, M.D., Ph.D.
Summary Measures: 7
Comparing rates (Poisson probability model)
Outcome counts events:
·e.g., number of lesions, number of infections
Outcome summarized by (log) event rate
Compare groups by (log) ratio of event rates
Information from mean variance relationship under null or alternative
Common Probability Models