get.weights {twang}R Documentation

Extract propensity score weights

Description

Extracts propensity score weights from a ps object.

Usage

get.weights(ps1,
            type = c("ATT", "ATE")[1],
            stop.method = NULL)

Arguments

ps1 a ps object
type indicates whether the weights are for the average treatment effect on the treated (ATT) or the average treatment effect on the population (ATE)
stop.method indicates which set of weights to retrieve from the ps object

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.

Value

a vector of weights

See Also

ps


[Package twang version 1.0-1 Index]