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Title: Datos con límite de detección bajo. Varios enfoques metodológicos
Author: Camacho Martinez, Pedro
Director: Sanz Pamplona, Rebeca
Tutor: Pérez Álvarez, Nuria
Others: Universitat Oberta de Catalunya
Keywords: detection limits
Tobit model
Bioinformatics -- TFM
Issue Date: 19-Jun-2017
Publisher: Universitat Oberta de Catalunya
Abstract: Many variables in epidemiological studies are continuous measures obtained by means of measurement equipments with detection limits, generating censored distributions. The censorship, opposite to the trucation, takes place for a defect of the data of the sample. The distribution of a censored variable is a mixture between a continuous and a categorical distributions. In this case, results from lineal regression models, by means of ordinary least squares, will provide biased estimates.
Language: Spanish
Appears in Collections:Trabajos finales de carrera, trabajos de investigación, etc.

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