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BayesDiagnosticTests
Estimation of Disease Prevalence and the Parameters of One, Two or Three Diagnostic Tests
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A package to calculate Bayesian posterior distributions via Gibbs sampling for the prevalence of a disease, and sensitivity, specificity, positive and negative predictive values for each test used for that disease, in the absence of a gold standard; requires that the free software packages Winbugs and Perl be installed.
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BayesContinuousDiagnosticTest
Estimation of Disease Prevalence and the Parameters of a Continuous Diagnotic Test and One or Two Dichotomous Diagnostic Test(s)
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A software package to calculate marginal Bayesian posterior distributions via Gibbs sampling when data are available from a continuous diagnostic test and one or two dichotomous diagnostic test(s) in the absence of a gold standard; requires that the free software packages R, Winbugs and Perl be installed.
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BayesLatentClassModels
A program for estimating diagnostic test properties and disease prevalence in the presence of possibly correlated tests
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A software package for estimating diagnostic test properties and disease prevalence in the presence of possibly correlated tests in the absence of a gold standard; requires that the free software packages R and Perl be installed.
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PredictiveValues
Computation of Predictive Values when using One, Two or Three Diagnostic Tests
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A program designed to convert information on a disease prevalence and one, two or three diagnosic tests into information on predictive values (i.e., on the probability for a patient of being truly positive given a series of diagnostic tests results)
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Sample size determination for inference on prevalence or diagnostic test sensitivity or specificity
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A package to calculate sample sizes based on highest posterior density intervals in the context of diagnostic testing in presence of one or two imperfect tests; requires that the free software packages R, Winbugs and Perl be installed.
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