Nonparametric Evaluation of Biomarker Accuracy Under Nested Case-Control Studies
نویسندگان
چکیده
منابع مشابه
Nonparametric estimation of relative mortality from nested case-control studies.
Andersen et al. (1985, Biometrics 41, 921-932) gave an estimator of the cumulative relative mortality comparing rates of death in an epidemiologic cohort to an external population as a function of time when covariate information is available on all cohort members. We present an analogous estimator when covariate information is known only on a nested case-control sample. Counting process techniq...
متن کاملSampling strategies in nested case-control studies.
A stratified version of nested case-control sampling which we call "countermatching" is presented. This design uses data available for all cohort members to obtain a sample for collecting additional information in a case-control substudy. Hitherto the only stratified sampling design for such studies has involved matching of controls to cases with respect to confounding variables. However, in so...
متن کاملEstimation of nonparametric risk functions in matched case-control studies
In epidemiological studies one is interested in investigating the probability of disease depending on risk factors and in particular in detecting interactions of risk factors. Within the setting of parametric logistic regression interactions can be modeled only in a clumsy and limited way. Modeling the risk function nonparametrically, estimating it e.g. by a smoothing (thin plate) spline is att...
متن کاملReuse of controls in nested case-control studies.
A frequently used study design within epidemiology is large cohort studies. In some situations additional information which is not included in the cohort, for instance biological material stored in biobanks, is required. The availability of such material is usually limited and might be very expensive to analyze for the entire cohort. A reasonable strategy is therefore to restrict the study samp...
متن کاملA relative power table for nested matched case-control studies.
OBJECTIVE To calculate relative powers for nested case-control studies for different values of both relative risk and numbers of controls per case, given a fixed number of cases available for analysis. METHODS Algebraic and numerical methods. RESULTS In nested case-control studies, statistical power is a function of relative risk, rarity of exposure, number of case-control sets, and the num...
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ژورنال
عنوان ژورنال: Journal of the American Statistical Association
سال: 2011
ISSN: 0162-1459,1537-274X
DOI: 10.1198/jasa.2011.tm09807