Calculate multiplicative bias (observed / actual) in variant prevalence

Source: R/varfreq_expected_mbias.R

This function calculates the multiplicative bias of the observed variant proportion relative to the actual variant proportion. This function assumes that variant 1 is the variant of concern. This function is specific to the two-variant system.

varfreq_expected_mbias(p_v1, c_ratio)

Arguments

p_v1

actual variant prevalence (proportion)

c_ratio

coefficient of detection ratio, calculated as the ratio of the coefficients of variant 1 to variant 2

Value

scalar giving the multiplicative bias of variant 1

See also

Other variant frequency functions: varfreq_cdf_logistic(), varfreq_freq_logistic(), varfreq_obs_freq()

Author

Shirlee Wohl, Elizabeth C. Lee, Bethany L. DiPrete, and Justin Lessler

Examples

varfreq_expected_mbias(p_v1 = 0.1, c_ratio = 1.1)
#> [1] 1.089109