Set treatment to a fixed value

Description

Creates a static intervention that sets the treatment to a fixed value for all individuals at all time points. The most common intervention type, corresponding to "always treat" (static(1)) or "never treat" (static(0)).

Usage

static(value)

Arguments

value

The fixed treatment value.

Value

A causatr_intervention object.

References

Hernan MA, Robins JM (2025). Causal Inference: What If. Chapman & Hall/CRC. Chapter 1 (static interventions).

See Also

shift(), dynamic(), scale_by(), threshold(), ipsi(), contrast()

Examples

library("causatr")

data("nhefs", package = "causatr")
fit <- causat(nhefs, outcome = "wt82_71", treatment = "qsmk",
              confounders = ~ sex + age + wt71)
contrast(fit, interventions = list(quit = static(1), continue = static(0)))