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Research Quarterly

a d va n c i n g s c i e n c e a n d p r o m o t i n g u n d e r s ta n d i n g o f t r a u m at i c s t r e s s

Published by: The National Center for PTSD VA Medical Center (116D) 215 North Main Street White River Junction Vermont 05009-0001 USA

(802) 296-5132 FAX (802) 296-5135 Email: ncptsd@va.gov

PTSD in Service Members and New Veterans of the

Brett T. Litz National Center for PTSD - VA Boston Healthcare System, Massachusetts Veterans Epidemiological

University School of Medicine and William E. Schlenger

Education, and Clinical Center, Durham VA Medical Center

All issues of the PTSD Research Quarterly are available online at: www.ncptsd.va.gov

Editorial Members: Editorial Director Matthew J. Friedman, MD, PhD

Fran H. Norris, PhD

Managing Editor Fred Lerner, DLS

Production Manager Heather Smith, BA Ed

Circulation Manager Susan Garone

National Center Divisions Executive White River Jct VT

Since the beginning of hostilities in Afghanistan in October 2001, more than 1.8 million US troops have served in Operation Enduring Freedom

What is the mental health impact of these extensive and ongoing wars, and which Veterans are most at risk for chronic PTSD? These epidemiologic

because the character of war changes over time,

Historically, epidemiologic studies of wars have been conducted after the end of hostilities. To an impressive degree, however, this is not the case

well as extensive personal and structural barriers to care. Vasterling et al. (2006), also using the PCL, evaluated a smaller convenience cohort of recently redeployed soldiers and found a probable PTSD

earlier work, Hoge et al. (2006) analyzed US military surveillance screening data completed by a convenience sample of Army and Marine Corps troops within 30 days of redeployment and

Behavioral Science Boston MA

tions and recommendations for future research.

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at time points more distal to the participants’ war- zone stress exposure. For example, using methods

Dissemination and Training Menlo Park CA

Clinical Neurosciences West Haven CT

Evaluation West Haven CT

characteristics to inferential power, we have grouped the studies by design type, and due to space limitations, do not cover other important health and mental health outcomes (for an excellent review, see Tanielian & Jaycox, 2008).

sought VA healthcare between 2001 and 2005 had

Women’s Health Sciences Boston MA

Keystone Studies

sample of more recent Veterans (Erbes et al.,

design. Hoge et al. (2004) conducted anonymous assessments of multiple convenience samples of Army and Marine Corps combat troops one week prior to deployment and approximately four months postdeployment. Using the PTSD Checklist (PCL), Hoge et al. (2004) estimated the prevalence of

Schell and Marshall (2008) conducted a random- digit telephone survey of formerly deployed OEF/

months prior) at a convenience sample of sites across the country. Using the PCL, the probable

and degree of combat exposure were associated

Continued on page 2

Author's Addresses: Brett T. Litzz

William E. Schlengerr

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