Model fitting is demonstrated in an occupational exposure study of nickel refinery workers. The design is compared to a nested case-control design with respect to analysis and efficiency in a small simulation. In this example, case-cohort sampling from the full cohort was more efficient than ...
We derive an explicit form for power/sample size calculation based on these two tests. A number of simulation studies have been used to illustrate the efficiency of the tests for the case-cohort design. An example is provided on how to use the formula. 展开 关键词:...
A multivariate example of case-cohort analysis: neonatal mortality in Switzerland, 1979-81.SELFIDENTIFYLANGUAGEDISABILITYA study of all births in Switzerland during the years 1979–81 is used to illustrate the advantages of the case-cohort design for this epidemiologic analysis of neonatal mortality. ...
A motivating example of the case-cohort study from an HIV vaccine trial is used to demonstrate the proposed method. The Canadian Journal of Statistics 39: 557577; 2011. 2011 Statistical Society of CanadaNous proposons d'utiliser la mthode de vraisemblance pondre pour ajuster un mod¨le de r...
Model fitting is demonstrated in an occupational exposure study of nickel refinery workers. The design is compared to a nested case-control design with respect to analysis and efficiency in a small simulation. In this example, case-cohort sampling from the full cohort was more efficient than ...
Related to Case-control study: cross-sectional study, Cohort studycase 1 (kās) n. 1. An instance or occurrence of a particular kind or category: a case of mistaken identity. See Synonyms at example. 2. An occurrence of a disease or disorder: a mild case of flu. 3. A set of circum...
Most existing methods of analysis for case–cohort data have concerned the analysis of univariate failure time data. However, clustered failure time data are commonly encountered in public health studies. For example, patients treated at the same center are unlikely to be independent. In this ...
Case-cohort data analyses often ignore valuable information on cohort members not sampled as cases or controls. The Atherosclerosis Risk in Communities (ARIC) study investigators, for example, typically report data for just the 10%â15% of subjects sampled for substudies of their cohort ...
2、without the disease,Case-control studies,Common types of controls,Population controls selected from the same community as the cases Hospital-based controls selected from the same health care institutions as the cases,Example of a case-control study: legionnaires disease(军团病) outbreak in Bogalusa...
cohort study Patients with a specific disease in a hospital Controls: General population Within same cohort study Patients with other diseases in the hospital Cases and controls should be selected from the same population Nested case-control and case-cohort studies – p.7/46 Example: Bladder ...