Open AccessA NOTE ON THE COVARIANCE OF THE MANTEL‐HAENSZEL LOG‐ODDS RATIO ESTIMATOR AND THE SAMPLE MARGINAL RATES
Author(s) -
Holland Paul W.
Publication year - 1989
Publication title -
ets research report series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.235
H-Index - 5
ISSN - 2330-8516
DOI - 10.1002/j.2330-8516.1989.tb00345.x
Subject(s) - statistics , mathematics , estimator , covariance , odds ratio , odds , sample size determination , sample (material) , econometrics , logistic regression , chemistry , chromatography
A simple technique, developed in Phillips (1987), is used to approximate Cov(, p̂ i ) i = 1,2 where is the Mantel‐Haenszel log‐odds‐ratio estimator for a 2×2×K table and the p̂ i are the sample marginal proportions. These results are then applied to obtain an approximate variance estimate of an adjusted risk difference based on the Mantel‐Haenszel odds‐ratio estimator.