CalcORatio: CalcORatio

In wlktan/surrogateSampling: Functions to conduct surrogate guided sampling designs

Description

This function returns the o_ratio a surrogate guided sampling design for a binary outcome compared to a random sample

Usage

CalcORatio(zsens, zspec, R = 0.5, pz)

Arguments

zsens	numeric; sensitivity of the surrogate Z for the outcome
zspec	numeric; specificity of the surrogate Z for the outcome
R	numeric; ratio of surrogate positives in sample i.e. P(Z=1|S=1)
pz	numeric; prevalence of surrogate in cohort i.e. P(Z=1)

Value

the Oratio of the sample

Examples

CalcORatio(0.2,0.8,0.5,0.12)

wlktan/surrogateSampling documentation built on May 23, 2019, 3:07 p.m.