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Clare Henn-Haase

Clare Henn-Haase

National University of New York Medical Center, USA / National University of Singapore, Singapore

Title: PTSD assessment discrepancies between the PCL screener and the gold standard caps IV/V using DSM-5 and ICD-11 diagnostic criteria in a sample of treatment seeking women in the public sector

Biography

Biography: Clare Henn-Haase

Abstract

This presentation reports on prevalence rates of DSM-5 and ICD-11 PTSD in a treatment seeking sample of women (n=162) enrolled in an NIMH-funded RCT. Analyses also compared discrepancies between CAPS and PCL ratings. PTSD prevalence and symptom endorsement were measured using clinician ratings (CAPS IV/V) and patient self-report (PCL-IV/V). Although the CAPS is the gold standard for measuring PTSD, the well validated PCL is often used as a comparable measure to screen for or diagnose PTSD. While the CAPS and PCL are highly correlated, there are often discrepancies in reported PTSD symptoms between these measures. In this study, of the patients with DSM-IV PTSD using the CAPS, 96.3% met criteria for DSM-5 and 87.7% met ICD-11 PTSD. Comparing rates of PTSD based on the PCL versus the CAPS, the rate of DSM-5 PTSD was lower on the PCL than the CAPS (78.4% vs. 96.3%) as was that for ICD-11 PTSD (71.0% vs. 87.7%). As expected, the rate of CAPS-based PTSD was lower in ICD-11 than DSM-5. However, there were notable discrepancies between the self-reported and clinician administered measures. Item endorsements indicated that patients self-reported more re-experiencing and fewer symptoms of avoidance of thoughts/feelings, negative emotions, detachment and restricted affect. Implications for measurement development will be discussed.