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McDonald SD, Beckham JC, Morey RA, Calhoun PS. The validity and diagnostic efficiency of the Davidson Trauma Scale in military veterans who have served since September 11th, 2001. J Anxiety Disord 23: 247-255

VA Mid-Atlantic Region Mental Illness Research, Education and Clinical Center, Durham, North Carolina, United States.
Journal of anxiety disorders (Impact Factor: 2.68). 09/2008; 23(2):247-55. DOI: 10.1016/j.janxdis.2008.07.007
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ABSTRACT The present study examined the psychometric properties and diagnostic efficiency of the Davidson Trauma Scale (DTS), a self-report measure of posttraumatic stress disorder (PTSD) symptoms. Participants included 158 U.S. military veterans who have served since September 11, 2001 (post-9/11). Results support the DTS as a valid self-report measure of PTSD symptoms. The DTS demonstrated good internal consistency, concurrent validity, and convergent and divergent validity. Diagnostic efficiency was excellent when discriminating between veterans with PTSD and veterans with no Axis I diagnosis. However, although satisfactory by conventional standards, efficiency was substantially attenuated when discriminating between PTSD and other Axis I diagnoses. Thus, results illustrate that potency of the DTS as a diagnostic aid was highly dependent on the comparison group used for analyses. Results are discussed in terms of applications to clinical practice and research.

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Available from: Jean C Beckham, Jan 08, 2014
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    • "Davidson et al. (1997) proposed a scale composed of 17 items, each one related to DSM-IV symptoms. Regardless of the participants and their cultural characteristics, the DTS scale has both construct (generally in terms of three or four factors) and convergent validity (with other PTSD measurements), and very good internal consistency and test–retest reliability (Bobes et al., 2000; Chen, Lin, Tang, Shen, & Lu, 2001; Davidson et al., 1997; McDonald, Beckham, Morey, & Calhoun, 2009; Villafañe, Milanesio, Marcellino, & Amodei, 2003). For example, Villafañe and his collaborators (2003) indicate that DTS has very high reliability (α=0.890) and a structure composed of four factors very consistent with the original structure and other previous validity studies. "
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    • "While there are specific aspects of this model that are clearly relevant to PTSD, particularly understanding cognitive-emotional interactions, the model does not adequately comprehend the effect of traumatic events and trauma-related information as distinct from emotional (trauma-unrelated) information. Moreover, this comparatively narrow treatment of cognitive-emotional processing does not encompass major symptom clusters of PTSD such as re-experiencing (frequent memories and thoughts of the trauma, reliving the trauma), hyperarousal (being frequently on guard, hyperalert, suddenly startled), and avoidance of persons and places that trigger reminders of the trauma (reviewed in Davidson et al., 1997; McDonald et al., 2008, 2009; Hayes et al., 2012). A traumatic experience is classified as Citerion-A of DSM-IV but is not a required diagnostic feature of depression, which makes it unique to PTSD (First et al., 1997). "
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    • "The Davidson Trauma Scale (DTS) was administered just prior to scanning to assess PTSD symptom severity (Davidson et al. 1997). Lacking a diagnostic interview in these subjects, a DTS cutoff score of 32, previously shown by us to have high diagnostic efficiency (0.94) in the post-9/11 military cohort [59], was used to divide the participants into a PTSD group with mean DTS (SD) = 74.4 (18.8) and Control group with mean DTS = 10.2 (8.8). "
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