Showing 1 - 10 of 254
Abstract The principle of insufficient reason (PIR) assigns equal probabilities to each alternative of a random experiment whenever there is no reason to prefer one over the other. The maximum entropy principle (MaxEnt) generalizes PIR to the case where statistical information like expectations...
Persistent link: https://www.econbiz.de/10014610914
Abstract Although the concept of randomized assignment in order to control for extraneous confounding factors reaches …
Persistent link: https://www.econbiz.de/10014610866
Abstract Mann–Whitney-type causal effects are clinically relevant, easy to interpret, and readily applicable to a wide range of study settings. This article considers estimation of such effects when the outcome variable is a survival time subject to right censoring. We derive and discuss...
Persistent link: https://www.econbiz.de/10014610873
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