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twang (version 1.3-14)

get.weights: Extract propensity score weights

Description

Extracts propensity score weights from a ps or mnps object.

Usage

get.weights(ps1,
			stop.method = NULL,
            estimand = NULL,
            withSampW = TRUE)

Arguments

ps1
a ps or mnps 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.
withSampW
Returns weights with sample weights multiplied in, if they were provided in the original ps or mnps call.

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.

See Also

ps