| Home | E-Submission | Sitemap | Contact Us
top_img
J Prev Med Public Health > Volume 40(6); 2007 > Article
Journal of Preventive Medicine and Public Health 2007;40(6): 495-504. doi: https://doi.org/10.3961/jpmph.2007.40.6.495
Strengthening Causal Inference in Studies using Non-experimental Data: An Application of Propensity Score and Instrumental Variable Methods.
Myoung Hee Kim, Young Kyung Do
1Department of Preventive Medicine, Eulji University College of Medicine.
2Department of Health Policy and Administration, University of North Carolina at Chapel Hill School of Public Health. youngdo@email.unc.edu
ABSTRACT
OBJECTIVES: This study attempts to show how studies using non-experimental data can strengthen causal inferences by applying propensity score and instrumental variable methods based on the counterfactual framework. For illustrative purposes, we examine the effect of having private health insurance on the probability of experiencing at least one hospital admission in the previous year. METHODS: Using data from the 4th wave of the Korea Labor and Income Panel Study, we compared the results obtained using propensity score and instrumental variable methods with those from conventional logistic and linear regression models, respectively. RESULTS: While conventional multiple regression analyses fail to identify the effect, the results estimated using propensity score and instrumental variable methods suggest that having private health insurance has positive and statistically significant effects on hospital admission. CONCLUSIONS: This study demonstrates that propensity score and instrumental variable methods provide potentially useful alternatives to conventional regression approaches in making causal inferences using non-experimental data.
Key words: Causality; Selection bias; Research design; Health insurance; Korea
TOOLS
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
CrossRef TDM  CrossRef TDM
  E-Mail
Share:      
METRICS
6
Crossref
5
Scopus
2,111
View
14
Download
  Facebook
  Twitter
Editorial Office
Graduate School of Public Health, Seoul National University
1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
Tel : +82-2-740-8328   Fax : +82-2-764-8328   E-mail: jpmphe@gmail.com
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © 2018 by Korean Society for Preventive Medicine. All rights reserved.                 powerd by m2community