Biomaterial Database

A comparison of stratified and adjusted trend tests for binomial proportions. 2006

Klervi Leuraud, and Jacques Benichou

Department of Biostatistics, University of Rouen Medical School and Rouen University Hospital, France. klervi.leuraud@irsn.fr

For the problem of testing for a monotonic trend between an ordinal exposure and a binary response while controlling for categorical cofactors, we derived stratified and adjusted versions of two single contrast tests. Using simulations, we compared their statistical properties to those of the commonly used stratified Mantel-extension trend (MET) test. All tests had high power in case of monotonic relationships between exposure and response. In case of non-monotonic relationships, the stratified and adjusted contrast tests were markedly less powerful than the stratified MET-test particularly for five exposure levels, a favourable feature when the aim is to test for the existence of a monotonic dose-response relationship. These results are illustrated by an example.

UI	MeSH Term	Description	Entries
D009102	Multiple Organ Failure	A progressive condition usually characterized by combined failure of several organs such as the lungs, liver, kidney, along with some clotting mechanisms, usually postinjury or postoperative.	MODS,Multiple Organ Dysfunction Syndrome,Organ Dysfunction Syndrome, Multiple,Organ Failure, Multiple,Failure, Multiple Organ,Multiple Organ Failures
D011446	Prospective Studies	Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.	Prospective Study,Studies, Prospective,Study, Prospective
D002986	Clinical Trials as Topic	Works about pre-planned studies of the safety, efficacy, or optimum dosage schedule (if appropriate) of one or more diagnostic, therapeutic, or prophylactic drugs, devices, or techniques selected according to predetermined criteria of eligibility and observed for predefined evidence of favorable and unfavorable effects. This concept includes clinical trials conducted both in the U.S. and in other countries.	Clinical Trial as Topic
D003422	Critical Care	Health care provided to a critically ill patient during a medical emergency or crisis.	Intensive Care,Intensive Care, Surgical,Surgical Intensive Care,Care, Critical,Care, Intensive,Care, Surgical Intensive
D003627	Data Interpretation, Statistical	Application of statistical procedures to analyze specific observed or assumed facts from a particular study.	Data Analysis, Statistical,Data Interpretations, Statistical,Interpretation, Statistical Data,Statistical Data Analysis,Statistical Data Interpretation,Analyses, Statistical Data,Analysis, Statistical Data,Data Analyses, Statistical,Interpretations, Statistical Data,Statistical Data Analyses,Statistical Data Interpretations
D004305	Dose-Response Relationship, Drug	The relationship between the dose of an administered drug and the response of the organism to the drug.	Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015337	Multicenter Studies as Topic	Works about controlled studies which are planned and carried out by several cooperating institutions to assess certain variables and outcomes in specific patient populations, for example, a multicenter study of congenital anomalies in children.	Multicenter Trials,Multicentre Studies as Topic,Multicentre Trials,Multicenter Trial,Multicentre Trial,Trial, Multicenter,Trial, Multicentre,Trials, Multicenter,Trials, Multicentre