Results
Title

Latent class instrumental variables and the monotonicity assumption.

Authors

Baker, Stuart G.

Abstract

A key aspect of the article by Lousdal on instrumental variables was a discussion of the monotonicity assumption. However, there was no mention of the history of the development of this assumption. The purpose of this letter is to note that Baker and Lindeman and Imbens and Angrist independently introduced the monotonicity assumption into the analysis of instrumental variables. The letter also places the monotonicity assumption in the context of the method of latent class instrumental variables.

Subjects

PATIENT compliance; RANDOMIZED controlled trials; TREATMENT effectiveness; STATISTICAL models; CONFOUNDING variables

Publication

Emerging Themes in Epidemiology, 2020, Vol 17, Issue 1, p1

ISSN

1742-7622

Publication type

Academic Journal

DOI

10.1186/s12982-020-00088-8