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Activity Number: 244
Type: Contributed
Date/Time: Monday, August 4, 2014 : 2:00 PM to 3:50 PM
Sponsor: Section on Statistics in Epidemiology
Abstract #311350
Title: Multiple Comparisons of Disease Prevalence in the Presence of Misclassification
Author(s): Ping Yang*+ and Wai Yin Poon and Siu Hung Cheung
Companies: and Chinese University of Hong Kong and Chinese University of Hong Kong
Keywords: Multiple comparisons ; Disease prevalence rates ; Partially validated series
Abstract:

The comparison of disease prevalence for different populations is an important medical research problem in the area of public health. It is frequent that both high-cost infallible gold-standard classifiers and low-cost fallible classifiers are available to classify individuals as having or not having a disease. In order to obtain a reasonable estimate of the disease prevalence rate under the constraint of limited resources, it is not unusual to proceed with a diagnostic scheme with which a small group of individuals in the sample receives both the gold-standard test and the fallible classifier, while the rest receive only the fallible classifier. Statistical methods to compare disease prevalence of two populations based on the above framework are available. The objective of this study is to extend previous research to situations where multiple comparisons of disease prevalence for several populations are required. We also provide the methods to determine the required sample size when test power is specified. Furthermore, our proposed procedure is illustrated by data extracted from a disease prevalence study.


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