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Performance characteristics of the PTSD Checklist in retired firefighters exposed to the World Trade Center disaster

Sydney Chiu, MA

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Mayris P. Webber, DrPH

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA, Montefiore Medical Center and Albert Einstein, College of Medicine, Bronx, NY, USA

Rachel Zeig-Owens, MPH

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Jackson Gustave, MPH

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Roy Lee, BS

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Kerry J. Kelly, MD

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Linda Rizzotto, LCSW, CASAC

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA

Rita McWilliams, PhD

Environmental and Occupational Medicine, University of Medicine and Dentistry at New Jersey, Robert Wood Johnson Medical School, Piscataway, NJ, USA

John K. Schorr, PhD

Stetson Institute for Social Research, Stetson University, DeLand, FL, USA

Carol S. North, MD, MPE

Program in Trauma and Disaster, Dallas VA North Texas Health Care System, Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA

David J. Prezant, MD

Fire Department of the City of New York, Bureau of Health Services, Brooklyn, NY, USA, Montefiore Medical Center and Albert Einstein, College of Medicine, Bronx, NY, USA

BACKGROUND: Since the World Trade Center (WTC) attacks on September 11, 2001, the Fire Department, City of New York Monitoring Program has provided physical and mental health screening services to rescue/recovery workers. This study evaluated performance of the self-report PTSD Checklist (PCL) as a screening tool for risk of posttraumatic stress disorder (PTSD) in firefighters who worked at Ground Zero, compared with the interviewer-administered Diagnostic Interview Schedule (DIS).

METHODS: From December 2005 to July 2007, all retired firefighter enrollees completed the PCL and DIS on the same day. Sensitivity, specificity, receiver operating characteristic (ROC) curves, and Youden index (J) were used to assess properties of the PCL and to identify an optimum cutoff score.

RESULTS: Six percent of 1,915 retired male firefighters were diagnosed with PTSD using the DIS to assess DSM-IV criteria. Depending on the PCL cutoff, the prevalence of elevated risk relative to DSM-IV criteria varied from 16% to 22%. Youden index identified an optimal cutoff score of 39, in contrast with the frequently recommended cutoff of 44. At 39, PCL sensitivity was 0.85, specificity was 0.82, and the area under the ROC curve was 0.91 relative to DIS PTSD diagnosis.

CONCLUSIONS: This is the first study to validate the PCL in retired firefighters and determine the optimal cutoff score to maximize opportunities for PTSD diagnosis and treatment.

KEYWORDS: disasters, September 11 terrorist attacks, PTSD checklist, posttraumatic stress disorder, firefighters

ANNALS OF CLINICAL PSYCHIATRY 2011;23(2):95-104

CORRESPONDENCE: Mayris P. Webber, DrPH New York City Fire Department, Bureau of Health Services 9 Metrotech Center Brooklyn, NY 11201 USA E-MAIL: webberm@fdny.nyc.gov
Annals of Clinical Psychiatry ©2011 Quadrant HealthCom Inc.

 
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