heemod (version 0.9.0)

define_psa: Define Parameters Distribution for Probabilistic Analysis

Description

Define the properties of parameter distributions and their correlation structure for probabilistic uncertainty analysis of Markov models.

Usage

define_psa(..., correlation)
define_psa_(list_qdist, list_multi, correlation)

Arguments

...

Formulas defining parameter distributions.

correlation

A correlation matrix for parameters or the output of define_correlation().

list_qdist

List of resampling functions.

list_multi

List of multinomial parameters.

Value

An object of class resamp_definition. Contains list_qdist, a list of quantile functions and correlation a correlation matrix.

Details

The distributions must be defined within heemod (see distributions), or defined with define_distribution(). If no correlation matrix is specified parameters are assumed to be independant. The correlation patrix need only be specified for correlated parameters.

Examples

mc <- define_correlation(
  age_init, cost_init, .4
)

define_psa(
    age_init ~ normal(60, 10),
    cost_init ~ normal(1000, 100),
    correlation = mc
)

# example with multinomial parameters

define_psa(
  rate1 + rate2 + rate3 ~ multinomial(10, 50, 40),
  a + b ~ multinomial(15, 30)
)