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The Mississippi Scale for Combat-Related Posttraumatic Stress Disorder (M-PTSD) is a 35-item screening instrument for combat-related PTSD (Keane, Caddell, & Taylor, 1988) that has been normed largely on veterans from the Vietnam era. Research on its psychometric properties with veterans across different periods of service (POS) remains limited; however, this is an important research endeavor because of the uniqueness in experiences across eras which may influence PTSD rates, symptom expression/complaints, and treatment completion/outcomes. In this study, our objective was to examine the instrument's properties, replicating Keane et al.'s (1988) methodologies, with veterans from World War II, Korean, Vietnam, post-Vietnam, and Persian Gulf (pre- and post-9/11) eras. This retrospective cohort study involved the examination of medical records of 29,280 veterans receiving care across Veterans Affairs medical outpatient centers nationwide. The data revealed significant differences across POS in terms of M-PTSD total scores, (4, 29,275) = 55.01, = .000; therefore, analyses were conducted with the entire sample and with each POS. The instrument demonstrated high internal consistency with our sample (α = .92) and across POS (.91 to .92). Receiver operating characteristic curves identified cut-scores ranging from 86 to 112 across the POS with acceptable-to-good sensitivity (68% to 81%) and fair-to-acceptable specificity (61% to 70%), with lower scores among World War II and Korean era veterans compared with veterans from more recent conflicts. In terms of clinical implications, the M-PTSD is a brief, easily accessible, valuable screening tool for combat-related PTSD in veterans across a range of POS. Future studies should consider the methodologies utilized to diagnose PTSD and how this potentially impacts the instrument's properties. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
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Name: Psychological services
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A subjective psychometric response scale used to measure distinct behavioral or physiological phenomena based on linear numerical gradient or yes/no alternatives.
Neurotic reactions to unusual, severe, or overwhelming military stress.
A scale comprising 18 symptom constructs chosen to represent relatively independent dimensions of manifest psychopathology. The initial intended use was to provide more efficient assessment of treatment response in clinical psychopharmacology research; however, the scale was readily adapted to other uses. (From Hersen, M. and Bellack, A.S., Dictionary of Behavioral Assessment Techniques, p. 87)
Death of a bone or part of a bone, either atraumatic or posttraumatic.
A class of traumatic stress disorders that is characterized by the significant dissociative states seen immediately after overwhelming trauma. By definition it cannot last longer than 1 month, if it persists, a diagnosis of post-traumatic stress disorder (STRESS DISORDERS, POST-TRAUMATIC) is more appropriate.
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