A case-control study is an experimental design that compares a group of participants possessing a condition of interest to a very similar group lacking that condition.
Synonyms Observational designs ; Observational studies ; Observational study Definition A case-control study is a study in which subjects are selected based on their outcome status, such as with disease or disease-free. Investigators select cases (subjects with the outcome of interest) and controls ...
study, so that an association with birth defects of an unanticipated kind, such as a previously unrecognized pattern of minor anomalies, cannot be identified. In this regard, case definition and the system used to classify birth defects into the group(s) chosen for inclusion in the study may ...
case-control-study Case-ControlStudy （病例对照研究）1.BasicConcepts Astudystartswiththeidentificationofpersonswiththediseaseofinterestandacontrolgroupofpersonswithoutthedisease,tomeasuretheassociationbetweentheexposureandthediseasebycomparingthediseasedandnon-diseasedwithregardedtohowfrequentlytheexposurepresent.Exposure ...
case study in the Education topic by Longman Dictionary of Contemporary English | LDOCE | What you need to know about Education: words, phrases and expressions | Education
definition of controls: The peoples without develop the aim disease, has the same source with case group Sources of controls : Community Hospital Relatives, neighbors, colleagues and schoolmates 5. Sample Size • Parameters The proportion of exposure that study factors in control group(P 0 ...
? Understand the rationale of a case-control study Understand that a case-control study estimates a measure of association possible in a cohort study Understand potential biases in case-control studies Understand advantages and disadvantages of matching ? ? “A primary goal is to reach the same ...
The meaning of CASE STUDY is an intensive analysis of an individual unit (such as a person or community) stressing developmental factors in relation to environment. How to use case study in a sentence.
Exampleofacase-controlstudy:legionnaires’disease（军团病）outbreakin Bogalusa,LA Report:FromOctober10throughNovember131989,33patientswerehospitalizedwithlegionnaires'disease(LD)inBogalusa,LouisianaResearchQuestion:Whatexposurefactorsintheprevious10daysweremorecommonlyfoundamongLDcasescomparedtoLD-freecontrols?•Twenty-...
Define Case-studies. Case-studies synonyms, Case-studies pronunciation, Case-studies translation, English dictionary definition of Case-studies. n. 1. A detailed analysis of a person or group, especially as a model of medical, psychiatric, psychological,