Extracts propensity score weights from a ps object.
Usage
get.weights(ps1,
stop.method,
estimand = NULL)
Arguments
ps1
a ps object
stop.method
indicates which set of weights to retrieve from the ps object
estimand
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.
Value
a vector of weights
Details
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.