Tests for homogeneity of effect in an epidemiologic investigation

A test for homogeneity of the effect of a factor in inducing disease in the various strata of a population should relate to the scaling in which homogeneity ...

tests for homogeneity of effect in an epidemiologic investigation1

Tests for homogeneity of effect In an epldemlologlc Investigation. Am J Epidemiol 106:125-129, 1977. A test for homogeneity of the effect of a factor in ...

Tests for homogeneity of effect in an epidemiologic investigation ...

It is advised that tests for homogeneity be conducted with care, and that thought be given to how effects might be made homogeneous rather than to trying to ...

Testing for homogeneity in meta-analysis I. The one-parameter case

Cochran's Q statistic is frequently used for this homogeneity test. It is often assumed that Q follows a chi-square distribution under the null hypothesis of ...

Confounding and Effect Measure Modification - sph.bu.edu

Whether they are "significantly different" can be tested by using a chi-square test of homogeneity, as described in the Aschengrau & Seage textbook. If there is ...

Testing the homogeneity of odds ratio across strata for combined ...

Specifically, this study aims to develop statistical procedures for testing the homogeneity of treatment effect, as measured by odds ratio, using both bilateral ...

3.5 - Bias, Confounding and Effect Modification | STAT 507

Power the study to test potential effect modifiers - if a priori you think ... Use Breslow-Day Test for Homogeneity of the odds ratios, from Extended ...

Testing homogeneity of effect sizes in pooling 2x2 contingency ...

Liang and Self (Citation1989) focused on developing test statistics in case data are sparse, i.e. some cells in the study-specific contingency tables contain ...

4. CLASSICAL METHODS OF ANALYSIS OF GROUPED DATA

natl Cancer Inst., 22, 719-748. Mantel, N., Brown, C. & Byar, D.P. (1977) Tests for homogeneity of effect in an epidemiologic investigation. Am. J. Epidemiol., ...

Choosing Statistical Models to Assess Biological Interaction as a ...

joint and independent effects and, equivalently, as a homogeneity of effects. ... The RERI is commonly used in epidemiologic research to quantify ...

Epidemiology | Stata

Tests for homogeneity; Choice of weights for stratified tables: Mantel ... Small-study effects and publication bias; Cumulative meta-analysis ...

Evaluation of Old and New Tests of Heterogeneity in Epidemiologic ...

The identification of heterogeneity in effects between studies is a key issue in meta-analyses of observational studies, since it is critical for determining ...

Effect Modification – Foundations of Epidemiology

In this case, the covariable (gender) is neither a confounder nor an effect modifier. We say that it is not a confounder because (1) the crude lies between the ...

A Monte Carlo Investigation of Homogeneity Tests of the Odds Ratio ...

Epidemiologic data for case-control studies are often summarized into K 2 x 2 tables. Given a fixed number of cases and controls, the degree of sparseness ...

A classical hypothesis test for assessing the homogeneity of disease ...

The test is based on time-ordered group labels of individuals. The null hypothesis is that of homogeneity of disease transmission among ...

Analyzing and Interpreting Data | Epidemic Intelligence Service - CDC

... study or survey might need to incorporate weights or design effects in the analysis. ... homogeneity of odds ratios or by testing the ...

Choice of effect measure for epidemiological data - ScienceDirect.com

A numerical comparison of models of constant RD, RR, and OR is made to assess when and by how much they might differ in practice. Typically the models show only ...

An empirical study of Hedge's homogeneity test. - APA PsycNet

Horsnell, G. (1953). The effect of unequal group variances on the F-test for the homogeneity of group means. Biometrika, 40, 128-136.

A Tutorial on Interaction - Harvard T.H. Chan School of Public Health

are thought most likely to show evidence for effect heterogeneity and test for these alone. ... Tests for interaction in epidemiologic studies: A review and study ...

195-31: Using SAS® to Investigate Effect Modification

A Breslow-Day statistic—generated by adding the. “chm” option to the “tables” statement—tests the homogeneity of the odds ratios across the levels of the.