adjPrevSensSpec {bootComb}

Adjust a prevalence point estimate for a given assay sensitivity and specificity.

Description

Given a reported prevalence estimate from an imperfect assay with known sensitivity and specificity, this function will adjust the prevalence point estimate for the assay sensitivity and specificity.

Usage

adjPrevSensSpec(prevEst, sens, spec, replaceImpossibleValues = FALSE)

Arguments

prevEst

The reported prevalence point estimate.

sens

The known assay sensitivity.

spec

The known assay specificity.

replaceImpossibleValues

Logical; not all combinations of prevalence, sensitivity and specificity are possible and it can be that the adjusted prevalence is <0 or >1, so if this parameter is set to TRUE, values below 0 are set to 0, values above 1 to 1. Default to FALSE.

Value

A vector of the same length as prevEst, returning the adjusted prevalence estimates.

See Also

adjPrevSensSpecCI, ssBetaPars, optim, dbeta

Examples

adjPrevSensSpec(prevEst=0.16,sens=0.90,spec=0.95)