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osu1298997078.pdf (3.46 MB)
ETD Abstract Container
Abstract Header
The Use of Propensity Scores to Estimate Sample Selection Error in Observational Data
Author Info
Pressler, Taylor R.
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=osu1298997078
Abstract Details
Year and Degree
2011, Master of Science, Ohio State University, Statistics.
Abstract
While randomized controlled trials (RCT) are considered the “gold standard” for clinical studies, the use of exclusion criteria may impact the external validity of the results. It is un- known whether estimators of effect size are biased by excluding a portion of the population. However, it may be possible to use data from observational studies to estimate a difference between the population average treatment effect (PATE) of the included and excluded portions of the population, the sample selection error (SSE). We propose an estimator for the SSE and use simulation to study its properties while considering a non-constant treatment effect. We find that a doubly robust estimator that uses both propensity scores and a model for the outcome generally outperforms an estimator that solely relies on the use of propensity scores, even when model elements are misspecified.
Committee
Eloise Kaizar, Ph.D. (Advisor)
William Gardner, Ph.D. (Committee Member)
Subject Headings
Biomedical Research
;
Biostatistics
;
Medicine
;
Statistics
Keywords
Propensity scores
;
Randomized Controlled Trials
;
exclusion criteria
;
bias
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Citations
Pressler, T. R. (2011).
The Use of Propensity Scores to Estimate Sample Selection Error in Observational Data
[Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1298997078
APA Style (7th edition)
Pressler, Taylor.
The Use of Propensity Scores to Estimate Sample Selection Error in Observational Data.
2011. Ohio State University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=osu1298997078.
MLA Style (8th edition)
Pressler, Taylor. "The Use of Propensity Scores to Estimate Sample Selection Error in Observational Data." Master's thesis, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1298997078
Chicago Manual of Style (17th edition)
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Document number:
osu1298997078
Download Count:
450
Copyright Info
© 2011, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.