Author

Can Meng

Publication Date

2015

Document Type

Dissertation/Thesis

First Advisor

Ryu, Duchwan

Degree Name

M.S. (Master of Science)

Department

Department of Statistics

LCSH

Statistics||Public health||Cognition in old age--Statistical methods||Body mass index--Statistical methods||Older people--Health and hygiene--Statistics||Older Mexican Americans--Health and hygiene--Statistics

Abstract

Marginal structure models (MSM) are causal models proposed to estimate the causal effect of time-vary treatments by controlling time-dependent confounders in observational studies. The objective of this thesis is to illustrate the fitting of an MSM for the causal effect of cognitive decline on BMI changes among old Mexican Americans participating in the Hispanic EPESE Cohort study. Based on MSM analysis, we reported that those suffered cognitive decline in later life will receive significant reduction in BMI by 0.1809 kg/m 2 on average (P-value=0.0305). We also conducted several sensitivity studies to explore different impacts on our MSM.

Comments

Advisors: Duchwan Ryu.||Committee members: Sanjib Basu; Nader Ebrahimi.

Extent

66 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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