The nature and course of subthreshold PTSD

Weill Cornell Medical College, Department of Psychiatry, 525 East 68th Street, Box 200, New York, NY 10065, USA.
Journal of anxiety disorders (Impact Factor: 2.68). 12/2010; 24(8):918-23. DOI: 10.1016/j.janxdis.2010.06.017
Source: PubMed


This study investigated rates of subthreshold PTSD and associated impairment in comparison to no PTSD and full PTSD and prospectively followed the course of subthreshold symptoms over 3 years. 3360 workers dispatched to the WTC site following 9/11 completed clinician interviews and self-report measures at three time points each one year apart. At Time 1, 9.7% of individuals met criteria for subthreshold PTSD. The no PTSD, subthreshold PTSD, and full PTSD groups exhibited significantly different levels of impairment, rates of current MDD diagnosis, and self-reported symptoms of depression. At Time 2, 29% of the initial sample with subthreshold PTSD continued to meet criteria for subthreshold or full PTSD; at Time 3, this was true for 24.5% of the initial sample. The study lends credence to the clinical significance of subthreshold PTSD and emphasizes that associated impairment may be significant and longstanding. It also confirms clinical differences between subthreshold and full PTSD.

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    • "Notably, when left untreated, subthreshold PTSD can be stable and chronic (Cukor et al., 2010). In a longitudinal study assessing symptoms of 9/11 World Trade Center disaster recovery workers, 29.0% meeting subthreshold PTSD at baseline met criteria for subthreshold or full PTSD at one year follow-up, and 25.0% still met criteria at two year follow-up (Cukor et al., 2010). Accordingly, psychological and functional impairment associated with subthreshold PTSD may not remit on its own for a substantial minority of individuals. "

    Behaviour Research and Therapy 08/2015; 73:33-41. DOI:10.1016/j.brat.2015.07.010 · 3.85 Impact Factor
    • "Smid et al.'s (2009) meta-analysis of four studies showed 26% of participants who initially met criteria for Subthreshold PTSD (defined as meeting criteria for two of three symptom clusters) developed fully threshold symptoms at a later time. Cukor et al. (2010) examined a sample of participants longitudinally and demonstrated that approximately 11% of individuals initially classified as Subthreshold PTSD based on the Blanchard et al. (1994) definition retained this classification and approximately 9% progressed to full PTSD 4 years after the traumatic event. Lack of consistency in defining Subthreshold PTSD in the literature is a problem in that it is difficult to aggregate results across studies . "
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    ABSTRACT: Subthreshold posttraumatic stress disorder (PTSD), whether due to absence of symptom development or partial remission, is the subject of research and clinical work despite being absent from the DSM. A problem with the literature is that subthreshold definitions are inconsistent across studies and therefore aggregating results is difficult. This study compared the diagnostic hit rates and validity of commonly used definitions of Subthreshold PTSD in a single sample. Three definitions of Subthreshold PTSD were extracted from the literature and two were formed, including a model of DSM-5 PTSD-criterion sets, and a definition that requires six or more PTSD symptoms, but no particular criterion set. Participants (N = 654) with a criterion A stressor, but without full PTSD diagnosis, were included. Most individuals did not meet any definition of Subthreshold PTSD. Findings are discussed in light of previous research and need for increased understanding of the diagnostic implications of Subthreshold PTSD.
    The Journal of nervous and mental disease 07/2015; 203(8). DOI:10.1097/NMD.0000000000000332 · 1.69 Impact Factor
    • "Military service members (SM) deployed to wars in Iraq and Afghanistan are more likely to experience posttraumatic stress disorder (PTSD) symptoms related to both warzone and homefront experiences (Smith et al., 2008; Vasterling et al., 2010) than those who did not deploy. Post-deployment PTSD symptoms are associated with reduced quality of life and functional status in SMs (Schnurr et al., 2009; Tsai et al., 2012), even for those whose symptoms fall short of meeting full diagnostic criteria for PTSD (Cukor et al., 2010; Grubaugh et al., 2005; Magruder et al., 2004). The current literature implies a variable risk for PTSD symptom development, attributable to a number of risk (e.g. "
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    ABSTRACT: Abstract
    07/2015; 2:62-66. DOI:10.1016/j.ynstr.2015.07.001
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