Simdata {TGST}

Simulated data for package illustration

Description

A simulated dataset containing true disease status and risk score. See details for simulation setting.

Usage

data(Simdata)

Format

A data frame with 8000 simulated observations on the following 2 variables.

Z

True disease status (No disease / treatment success coded as Z=0, diseased / treatment failure coded as Z=1).

S

Risk score. Higher risk score indicates larger tendency of diseased / treatment failure.

Details

We first simulate viral status Z assuming Z\sim Bernoulli(p) with p=0.25; and then conditional on Z, simulate {S|Z=z}=ceiling(W) with W\sim Gamma(\eta_z,\kappa_z) where \eta and \kappa are shape and scale parameters.(\eta0,\kappa0)=(2.3,80) and (\eta1,\kappa1)=(9.2,62).

Examples

data(Simdata)
## maybe str(Simdata) ; plot(Simdata) ...