Retrieves the population average direct causal effect for a specified allocation: \(\hat{Y}(0, alpha) - \hat{Y}(1, alpha)\).
direct_effect(object, allocation = NULL, trt.lvl1 = 0)an object of class interference
the allocation scheme for which to estimate direct effects. If NULL, then returns all direct effects.
Defaults to 0.
a data.frame with requested values