thresh.val.dorf {binGroup}

Find the optimal threshold value for Thresholded Optimal Dorfman testing

Description

Find the optimal threshold value for Thresholded Optimal Dorfman (TOD) testing.

Usage

thresh.val.dorf(p, psz, se = 1, sp = 1)

Arguments

p

a vector of each individual's probability of infection.

psz

the initial pool size.

se

the sensitivity of the diagnostic test.

sp

the specificity of the diagnostic test.

Details

This function finds the optimal threshold value for TOD testing for situations where the threshold value is not specified. See McMahan et al. (2012) for additional details on the implementation of TOD testing.

Value

The optimal threshold value for TOD testing.

Author(s)

This function was originally written by Christopher S. McMahan for McMahan et al. (2012). The function was obtained from http://chrisbilder.com/grouptesting.

References

McMahan, C., Tebbs, J., Bilder, C. (2012). “Informative Dorfman Screening.” Biometrics, 68(1), 287–296. ISSN 0006341X, doi: 10.1111/j.1541-0420.2011.01644.x.

See Also

http://chrisbilder.com/grouptesting

Other Informative Dorfman functions: accuracy.dorf, characteristics.pool, inf.dorf.measures, opt.info.dorf, opt.pool.size, pool.specific.dorf

Examples

# This example takes approximately 4 seconds to run. 
# Estimated running time was calculated using a 
#   computer with 16 GB of RAM and one core of an 
#   Intel i7-6500U processor.
## Not run: 
set.seed(3154)
p.vec <- p.vec.func(p=0.10, alpha=0.5, grp.sz=1000)
thresh.val.dorf(p=p.vec, psz=10, se=0.95, sp=0.95)
## End(Not run)

# This example takes less than 1 second to run.
# Estimated running time was calculated using a 
#   computer with 16 GB of RAM and one core of an 
#   Intel i7-6500U processor.
p.vec <- p.vec.func(p=0.15, alpha=2, grp.sz=100)
thresh.val.dorf(p=p.vec, psz=10, se=0.95, sp=0.95)