What is the difference between the 'IPW' and 'AIPW' methods?

11 vues

Réponse

The 'IPW' (Inverse Probability Weighting) method requires the observed outcome and predicted treatment probabilities. The 'AIPW' (Augmented Inverse Probability Weighting) method is a doubly robust method that also requires predicted counterfactual outcome values in addition to what IPW requires.
Did this answer help you?
caEffect

causalanalysis

See technical action
Other questions about caEffect
How do I specify the potential outcomes to be estimated? How does the action handle different types of outcome variables? What estimation methods can be used with the caEffect action? What is the difference between the 'IPW', 'REGADJ', and 'AIPW' methods? What is the primary purpose of the caEffect action?
Copyright © WeAreCAS 2014-2026
SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration. WeAreCAS is an independent community site and is not affiliated with SAS Institute Inc.