Exact methods are used here in addition to conventional approximations.įor a single stratum odds ratio is estimated as follows: This StatsDirect function examines the odds ratio for each stratum (a single fourfold table) and for the group of studies as a whole. Meta-analysis is used to investigate the combination or interaction of a group of independent studies, for example a series of fourfold tables from similar studies conducted at different centres. The Mantel-Haenszel method provides a pooled odds ratio across the strata of fourfold tables. Stratification of this kind is sometimes used to reduce confounding. The separation of data into different tables or strata represents a sub-grouping, e.g. healed or not healed) can by represented by arranging the observed counts into fourfold (2 by 2) tables. Mantel-Haenszel Test and Odds Ratio Meta-analysisĬase-control studies of dichotomous outcomes (e.g.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |