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Bias and Bias Correction in Multisite Instrumental Variables Analysis of Heterogeneous Mediator Effects
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Reardon, Sean F.; Unlu, Fatih; Zhu, Pei; Bloom, Howard S. – Journal of Educational and Behavioral Statistics, 2014
We explore the use of instrumental variables (IV) analysis with a multisite randomized trial to estimate the effect of a mediating variable on an outcome in cases where it can be assumed that the observed mediator is the only mechanism linking treatment assignment to outcomes, an assumption known in the IV literature as the exclusion restriction.…
Descriptors: Statistical Bias, Statistical Analysis, Least Squares Statistics, Sampling
Bias and Bias Correction in Multi-Site Instrumental Variables Analysis of Heterogeneous Mediator Effects
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Reardon, Sean F.; Unlu, Faith; Zhu, Pei; Bloom, Howard – Grantee Submission, 2013
We explore the use of instrumental variables (IV) analysis with a multi-site randomized trial to estimate the effect of a mediating variable on an outcome in cases where it can be assumed that the observed mediator is the only mechanism linking treatment assignment to outcomes, as assumption known in the instrumental variables literature as the…
Descriptors: Statistical Bias, Statistical Analysis, Least Squares Statistics, Sampling