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Abstract Unmeasured confounding is one of the most important threats to the validity of observational studies. In this … paper we scrutinize a recently proposed sensitivity analysis for unmeasured confounding. The analysis requires specification …
Persistent link: https://www.econbiz.de/10014610900
Abstract Suppose that we are interested in the average causal effect of a binary treatment on an outcome when this relationship is confounded by a binary confounder. Suppose that the confounder is unobserved but a nondifferential proxy of it is observed. We show that, under certain monotonicity...
Persistent link: https://www.econbiz.de/10014610902
Abstract Analysts often use data-driven approaches to supplement their knowledge when selecting covariates for effect estimation. Multiple variable selection procedures for causal effect estimation have been devised in recent years, but additional developments are still required to adequately...
Persistent link: https://www.econbiz.de/10014610915
measurement and confounding. We describe two sets of conditions under which adjusting for a non-deferentially mismeasured proxy …
Persistent link: https://www.econbiz.de/10014610918
Abstract We present a method for assessing the sensitivity of the true causal effect to unmeasured confounding. The … when there are measured mediators and unmeasured exposure–outcome confounding.  …
Persistent link: https://www.econbiz.de/10014610920
Abstract Residual confounding is a common source of bias in observational studies. In this article, we build upon a … series of sensitivity analyses methods for residual confounding developed by Brumback et al. and Chiba whose sensitivity …
Persistent link: https://www.econbiz.de/10014610935
Confounding is a major issue in observational epidemiological studies. This paper describes two postestimation commands … for assessing confounding effects. One command (confall) displays and plots all possible effect estimates against one of p …
Persistent link: https://www.econbiz.de/10009448358
confounding are weaker than requiring benchmark assumptions, such as exogeneity or a perfect proxy, and enable a sensitivity …
Persistent link: https://www.econbiz.de/10012215406
Covariate benchmarking is an important part of sensitivity analysis about omitted variable bias and can be used to bound the strength of the unobserved confounder using information and judgments about observed covariates. It is common to carry out formal covariate benchmarking under the...
Persistent link: https://www.econbiz.de/10014480652
Covariate benchmarking is an important part of sensitivity analysis about omitted variable bias and can be used to bound the strength of the unobserved confounder using information and judgments about observed covariates. It is common to carry out formal covariate benchmarking after...
Persistent link: https://www.econbiz.de/10014480725