1. The longitudinal association between homelessness, injection drug use, and injection- related risk behavior among persons with a history of injection drug use in Baltimore, MD 
Sabriya L. Linton, David D. Celentano, Gregory D. Kirk, Shruti H. Mehta 
Drug & Alcohol Dependence 
Volume 132, Issue 3, Pages (October 2013)
DOI: /j.drugalcdep
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2. Fig. 1
(a) Diagram illustrating when homelessness, injection drug use, and covariates are measured longitudinally at the lagged visit (t−1) and current visit (t) in models 1–3. (b) Diagram illustrating when homelessness, injection-related risk behavior, and covariates are measured longitudinally at the lagged visit (t−1) and current visit (t) in model 4.
Drug & Alcohol Dependence  , DOI: ( /j.drugalcdep )
Copyright © 2013 Elsevier Ireland Ltd Terms and Conditions