Constrained instruments and their application to Mendelian randomization with pleiotropy
Sign Up to like & getrecommendations! Published in 2019 at "Genetic Epidemiology"
DOI: 10.1002/gepi.22184
Abstract: In Mendelian randomization (MR), inference about causal relationship between a phenotype of interest and a response or disease outcome can be obtained by constructing instrumental variables from genetic variants. However, MR inference requires three assumptions,… read more here.
Keywords: pleiotropy; mendelian randomization; genetic variants; instrumental variables ... See more keywords
Use of instrumental variables for endogenous treatment at the provider level.
Sign Up to like & getrecommendations! Published in 2019 at "Health economics"
DOI: 10.1002/hec.3861
Abstract: Health economists are often interested in the effects of provider-level attributes (e.g., nonprofit status or quality rating) on patient outcomes, but estimation is subject to selection bias due to correlation with other omitted provider-level attributes… read more here.
Keywords: provider level; instrumental variables; level; patient level ... See more keywords
Does Shorter Postnatal Hospital Stay Lead to Postdischarge Complications? An Instrumental Variables Approach
Sign Up to like & getrecommendations! Published in 2019 at "Journal of International Development"
DOI: 10.1002/jid.3412
Abstract: We exploit the difference in means of postnatal hospital stays between beneficiary mothers of Janani Suraksha Yojana (JSY) and control mothers to estimate causal effects of postnatal hospital stay (PHS) on post-discharge complications (PDCs) of… read more here.
Keywords: jsy; instrumental variables; postnatal hospital; hospital ... See more keywords
Instrumental variables for parameter estimation in stochastic systems with coloured noise
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Dynamics and Control"
DOI: 10.1007/s40435-017-0304-z
Abstract: This paper presents an estimation algorithm for continuous-time stochastic systems under coloured perturbations using an extended form of the instrumental variable method. A comparison between the extended an the simple form was done using two… read more here.
Keywords: coloured noise; stochastic systems; systems coloured; variables parameter ... See more keywords
Identification of Fractional Linear Dynamical Systems with Autocorrelated Errors in Variables by Generalized Instrumental Variables
Sign Up to like & getrecommendations! Published in 2018 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2018.11.485
Abstract: Abstract This paper addresses the problem of identifying stochastic linear fractional discrete-time systems from noisy input/output data. The input noise is supposed to be fractional noise, while the output noise is assumed colored or fractional… read more here.
Keywords: fractional linear; generalized instrumental; identification fractional; instrumental variables ... See more keywords
Enhancing feedforward controller tuning via instrumental variables: with application to nanopositioning
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Control"
DOI: 10.1080/00207179.2016.1219921
Abstract: ABSTRACT Feedforward control enables high performance of a motion system. Recently, algorithms have been proposed that eliminate bias errors in tuning the parameters of a feedforward controller. The aim of this paper is to develop… read more here.
Keywords: enhancing feedforward; controller tuning; tuning via; instrumental variables ... See more keywords
Target income and its determinants for general physicians: An instrumental variables approach
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Healthcare Management"
DOI: 10.1080/20479700.2017.1389477
Abstract: ABSTRACT The economic behavior of physicians has a considerable effect on healthcare expenditure. A well-known theory for explaining physicians’ behavior is the target income hypothesis. In this theory, the main issue is concerned with how… read more here.
Keywords: target income; instrumental variables; desired income; actual income ... See more keywords
Implementation of Instrumental Variable Bounds for Data Missing Not at Random
Sign Up to like & getrecommendations! Published in 2018 at "Epidemiology"
DOI: 10.1097/ede.0000000000000811
Abstract: Instrumental variables are routinely used to recover a consistent estimator of an exposure causal effect in the presence of unmeasured confounding. Instrumental variable approaches to account for nonignorable missing data also exist but are less… read more here.
Keywords: instrumental variable; instrumental variables; variable bounds; bounds data ... See more keywords
Data-Driven Iterative Feedforward Tuning for a Wafer Stage: A High-Order Approach Based on Instrumental Variables
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Industrial Electronics"
DOI: 10.1109/tie.2018.2842756
Abstract: The feedforward controller plays an important role in the achievement of high servo performance of wafer scanning. In this paper, a novel data-driven feedforward tuning method is developed in the presence of noise. Three distinguished… read more here.
Keywords: based instrumental; iterative feedforward; instrumental variables; feedforward tuning ... See more keywords
Use of instrumental variables in electronic health record-driven models
Sign Up to like & getrecommendations! Published in 2018 at "Statistical Methods in Medical Research"
DOI: 10.1177/0962280216641154
Abstract: Precision medicine presents various methodological challenges whose assessment requires the consideration of multiple factors. In particular, the data multitude in the Electronic Health Records poses interoperability issues and requires novel inference strategies. A problem, though… read more here.
Keywords: electronic health; instrumental variables; health record; use instrumental ... See more keywords
The Role of Instrumental Variables in Causal Inference Based on Independence of Cause and Mechanism
Sign Up to like & getrecommendations! Published in 2021 at "Entropy"
DOI: 10.3390/e23080928
Abstract: Causal inference methods based on conditional independence construct Markov equivalent graphs and cannot be applied to bivariate cases. The approaches based on independence of cause and mechanism state, on the contrary, that causal discovery can… read more here.
Keywords: cause; independence cause; instrumental variables; based independence ... See more keywords