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Description

Estimate the Unit-Wide Probability of COVID-19.

We propose a method to estimate the probability of an undetected case of COVID-19 in a defined setting, when a given number of people have been exposed, with a given pretest probability of having COVID-19 as a result of that exposure. Since we are interested in undetected COVID-19, we assume no person has developed symptoms (which would warrant further investigation) and that everyone was tested on a given day, and all tested negative.

R package: covidprobability

Lifecycle:experimental

This package provides the functions, data and documentation that support a calculator to determine the probability of an undetected COVID-19 infection in a setting/unit after a potential exposure, testing, and when there are no symptomatic cases. For a detailed explanation of the rationale and implementation, please see the vignette.

Shiny

An interactive web app of this calculator is available.

Installation

You can install the latest version of covidprobability from Github with:

devtools::install.github("eebrown/covidprobability")

Disclaimer

This is an exploratory model and may contain errors. Please see the vignette for assumptions and limitations of the model. It should not be relied upon for clinical decisions.

Example


library(covidprobability)

test_n <- unit_probability(test_day = 9, pre0 =  0.13, sens = sens, spec = 1, 
                           asympt = 0.279, days = 14, mu = 1.63, sigma = 0.5, 
                           n = 10)
Metadata

Version

0.1.0

License

Unknown

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