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Abstract Details

Activity Number: 42
Type: Contributed
Date/Time: Sunday, July 29, 2012 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistics in Epidemiology
Abstract - #305673
Title: Threshold Modeling in the Presence of Measurement Error: Application to Serum Vitamin D
Author(s): Maria Joseph*+ and Alicia L. Carriquiry and Wayne A. Fuller and Christopher T. Sempos
Companies: Iowa State University and Iowa State University and Iowa State University and National Institutes of Health
Address: Department of Statistics, Ames, IA, 50011, United States
Keywords: measurement error ; segmented regression ; semiparametric

A function that has been suggested for the relationship between usual serum intact parathyroid hormone and usual serum vitamin D, where usual represents the long run average of the daily measurements of these quantities, is the segmented regression function. Simulation is used to compare alternative estimation procedures for the parameters of the segmented regression function. The estimation procedures are applied to sample data.

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