Do instrumental variables belong in propensity scores?

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read
Do instrumental variables belong in propensit ...
Jay Bhattacharya
Not in Library

My Reading Lists:

Create a new list

Check-In

×Close
Add an optional check-in date. Check-in dates are used to track yearly reading goals.
Today

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read

Buy this book

Last edited by MARC Bot
December 19, 2020 | History

Do instrumental variables belong in propensity scores?

  • 0 Ratings
  • 0 Want to read
  • 0 Currently reading
  • 0 Have read

"Propensity score matching is a popular way to make causal inferences about a binary treatment in observational data. The validity of these methods depends on which variables are used to predict the propensity score. We ask: "Absent strong ignorability, what would be the effect of including an instrumental variable in the predictor set of a propensity score matching estimator?" In the case of linear adjustment, using an instrumental variable as a predictor variable for the propensity score yields greater inconsistency than the naive estimator. This additional inconsistency is increasing in the predictive power of the instrument. In the case of stratification, with a strong instrument, propensity score matching yields greater inconsistency than the naive estimator. Since the propensity score matching estimator with the instrument in the predictor set is both more biased and more variable than the naive estimator, it is conceivable that the confidence intervals for the matching estimator would have greater coverage rates. In a Monte Carlo simulation, we show that this need not be the case. Our results are further illustrated with two empirical examples: one, the Tennessee STAR experiment, with a strong instrument and the other, the Connors' (1996) Swan-Ganz catheterization dataset, with a weak instrument"--National Bureau of Economic Research web site.

Publish Date
Language
English

Buy this book

Edition Availability
Cover of: Do instrumental variables belong in propensity scores?
Do instrumental variables belong in propensity scores?
2007, National Bureau of Economic Research
electronic resource / in English

Add another edition?

Book Details


Edition Notes

Title from PDF file as viewed on 9/21/2007.

Includes bibliographical references.

Also available in print.

System requirements: Adobe Acrobat Reader.

Mode of access: World Wide Web.

Published in
Cambridge, MA
Series
NBER working paper series -- working paper . 343, Working paper series (National Bureau of Economic Research : Online) -- working paper no. . 343.

Classifications

Library of Congress
HB1

The Physical Object

Format
[electronic resource] /

ID Numbers

Open Library
OL31800464M
LCCN
2007616550

Community Reviews (0)

Feedback?
No community reviews have been submitted for this work.

Lists

This work does not appear on any lists.

History

Download catalog record: RDF / JSON
December 19, 2020 Created by MARC Bot import new book