owsa: One-way sensitivity analysis
In dampack: Decision-Analytic Modeling Package

When used on a PSA object, this function uses a polynomial regression metamodel to predict the average outcome of a decision-analytic model as a function of a single input parameter. When used on a DSA object, this function uses the DSA results directly to show how the selected outcome varies as a function of the input parameter of interest. In the DSA context, this function is called internally by run_owsa_det and should not be called by the user. In the PSA context, the user must use this function to produce an owsa object.

owsa(
  sa_obj,
  params = NULL,
  ranges = NULL,
  nsamp = 100,
  outcome = c("eff", "cost", "nhb", "nmb", "nhb_loss", "nmb_loss"),
  wtp = NULL,
  strategies = NULL,
  poly.order = 2
)

`sa_obj`	sensitivity analysis object; either a probabilistic sensitivity analysis (`make_psa_obj`) or a deterministic sensitivity analysis object (`run_owsa_det`)
`params`	string vector with the name(s) of the parameter of interest. Defaults to all.
`ranges`	a named list of the form c("param" = c(0, 1), ...) that gives the ranges for the parameter of interest. If NULL, parameter values from the middle 95 from this range is determined by `nsamp`.
`nsamp`	number of samples to take from the ranges
`outcome`	either effectiveness ("eff"), cost ("cost"), net health benefit ("nhb"), net monetary benefit ("nmb"), or the opportunity loss in terms of NHB or NMB ("nhb_loss" and "nmb_loss", respectively). "nmb_loss_voi" and "nhb_loss_voi" are only used in internal function calls of metamodel within other VOI functions.
`wtp`	if outcome is NHB or NMB (or the associated loss), must provide the willingness-to-pay threshold
`strategies`	vector of strategies to consider. The default (NULL) is that all strategies are considered.
`poly.order`	order of polynomial for the linear regression metamodel. Default: 2

An object of class data.frame and owsa with the results of the sensitivity analysis. Can be visualized with plot.owsa, owsa_tornado, and owsa_opt_strat

dampack documentation built on May 31, 2021, 1:06 a.m.