Simulated infection testing data

Simulated infection testing data

Usage

infsim

infsim2

Format

infsim has 3600 rows, with 36 state observations for each of 100 people. A smaller dataset infsim2 has only 360 rows, from 20 people, and is simulated using a sojourn time of 60 days in the test-negative state and 10 days in test-positive.

Columns are:

• subject Subject identifier

• days Observation time (in days)

• months Observation time (in moths)

• state State simulated from a Markov model with no covariates

• sex: "male" or "female".

• age10: Age, in units of 10 years since age 50

• statec: State simulated from a Markov model with covariates

• statep: State simulated from a phase-type model (unused in any examples. See data-raw/infsim.R in the source for simulation settings)

• statepc: State simuated from a phase-type model with covariates (unused in any examples)

An object of class data.frame with 360 rows and 14 columns.

Source

Simulated

Details

The transition intensities used for the simulation are defined using a mean sojourn time of 180 days in the "test negative" state and 10 days in the "test positive" state.

For the model with covariates, the log hazard ratios are 2 for male on the 1-2 transition, 1 for age10 on the 1-2 transition, and -1 for age10 on the 2-1 transition. Baseline intensities are for female, age 50 (i.e. age10= 0).

In the state data, state 1 is negative and 2 is positive.