get_deltamethod_std_err: Get standard errors using delta method
In biodosimetry-uab/biodosetools: An R Shiny Application for Biological Dosimetry

get_deltamethod_std_err

R Documentation

Get standard errors using delta method

Description

Delta method for approximating the standard error of a transformation g(X) of a random variable X = (x1, x2, ...), given estimates of the mean and covariance matrix of X.

Usage

get_deltamethod_std_err(
  fit_is_lq,
  variable = c("dose", "fraction_partial", "fraction_hetero"),
  mean_estimate,
  cov_estimate,
  protracted_g_value = NA,
  d0 = NA
)

Arguments

`fit_is_lq`	Whether the fit is linear quadratic (`TRUE`) or linear (`FALSE`).
`variable`	Variable resulting of the transformation `g(X)`.
`mean_estimate`	The estimated mean of `X`.
`cov_estimate`	The estimated covariance matrix of `X`.
`protracted_g_value`	Protracted `G(x)` value.
`d0`	Survival coefficient of irradiated cells.