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Journal Article

Citation

Eisenberg D, Golberstein E, Whitlock JL. J. Health Econ. 2013; 33C: 126-138.

Affiliation

Department of Health Management and Policy, University of Michigan, 1415 Washington Heights, School of Public Health, Ann Arbor, MI 48109-2029, United States. Electronic address: daneis@umich.edu.

Copyright

(Copyright © 2013, Elsevier Publishing)

DOI

10.1016/j.jhealeco.2013.11.006

PMID

24316458

Abstract

Social scientists continue to devote considerable attention to spillover effects for risky behaviors because of the important policy implications and the persistent challenges in identifying unbiased causal effects. We use the natural experiment of assigned college roommates to estimate peer effects for several measures of health risks: binge drinking, smoking, illicit drug use, gambling, having multiple sex partners, suicidal ideation, and non-suicidal self-injury. We find significant peer effects for binge drinking but little evidence of effects for other outcomes, although there is tentative evidence that peer effects for smoking may be positive among men and negative among women. In contrast to prior research, the peer effects for binge drinking are significant for all subgroups defined by sex and prior drinking status. We also find that pre-existing risky behaviors predict the closeness of friendships, which underscores the significance of addressing selection biases in studies of peer effects.


Language: en

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