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  • Title: Validation of the Pittsburgh Sleep Quality Index Addendum for posttraumatic stress disorder (PSQI-A) in U.S. male military veterans.
    Author: Insana SP, Hall M, Buysse DJ, Germain A.
    Journal: J Trauma Stress; 2013 Apr; 26(2):192-200. PubMed ID: 23512653.
    Abstract:
    Sleep disturbances are core symptoms of posttraumatic-stress disorder (PTSD), yet they bear less stigma than other PTSD symptoms. Given the growing number of returning military veterans, brief, valid assessments that identify PTSD in a minimally stigmatizing way may be useful in research and clinical practice. The study purpose was to evaluate the psychometric properties of the Pittsburgh Sleep Quality Index Addendum for PTSD (PSQI-A), and to examine its ability to identify PTSD cases among U.S. male military veterans. Male military veterans (N = 119) completed the PSQI-A, as well as measures of sleep quality, combat exposure, posttraumatic stress, depression, and anxiety. Veterans with PTSD had higher PSQI-A identified disruptive nocturnal behaviors than veterans without PTSD. The PSQI-A had good internal consistency and convergent validity with sleep quality, combat exposure, PTSD symptoms, depression, and anxiety. A cutoff score ≥ 4 provided an area under the curve = .81, with 71% sensitivity, 82% specificity, and 60% positive and 83% negative predictive value for a clinical diagnosis of PTSD; correct classification was 74%. The PSQI-A is a valid measure to possibly detect PTSD among male military veterans. Assessment of disruptive nocturnal behaviors may provide a cost-effective, nonstigmatizing approach to PTSD screening without directly probing for trauma exposure(s).
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