Abstract:
:Unless the true association is very strong, simple large-sample confidence intervals for the odds ratio based on the delta method perform well even for small samples. Such intervals include the Woolf logit interval and the related Gart interval based on adding .5 before computing the log odds ratio estimate and its standard error. The Gart interval smooths the observed counts toward the model of equiprobability, but one obtains better coverage probabilities by smoothing toward the independence model and by extending the interval in the appropriate direction when a cell count is zero.
journal_name
Biometricsjournal_title
Biometricsauthors
Agresti Adoi
10.1111/j.0006-341x.1999.00597.xsubject
Has Abstractpub_date
1999-06-01 00:00:00pages
597-602issue
2eissn
0006-341Xissn
1541-0420journal_volume
55pub_type
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