Extracts propensity score weights from a ps or mnps object.
get.weights(ps1, stop.method = NULL, estimand = NULL, withSampW = TRUE)
Returns a vector of weights.
A ps
or mnps
object.
Indicates which set of weights to retrieve from the ps
object.
Indicates whether the weights are for the average treatment effect on
the treated (ATT) or the average treatment effect on the population (ATE). By default,
get.weights
will use the estimand used to fit the ps
object.
Whether to return weights with sample weights multiplied in, if they were
provided in the original ps
or mnps
call. Default: TRUE
.
Weights for ATT are 1 for the treatment cases and p/(1-p) for the control cases. Weights for ATE are 1/p for the treatment cases and 1/(1-p) for the control cases.
ps, mnps