@article {Hudson:September 2008:1360-7863:670,
	author = "Hudson, Sheila",
	author = "Beckford, Louisa",
	author = "Jackson, Stephen",
	author = "Philpot, Michael",
	title = "Validation of a screening instrument for post-traumatic stress disorder in a clinical sample of older adults",
	journal = "Aging and Mental Health",
	volume = "12",
	year = "September 2008",
	abstract = "Objectives: To determine the diagnostic validity of the Post Traumatic Disorder Checklist (PCL) against the 'gold standard' of the Clinician Administered PTSD Scale (CAPS) in a clinical sample of older adults. Methods: A cross-sectional validation study: participants were patients (65 years and over) being treated for medical and/or psychiatric conditions in a hospital setting. Participants completed the PCL, measures of mood, cognition, physical health, alcohol use and the CAPS. A receiver operating characteristics curve was constructed to determine the optimal cut-point of the PCL. Analysis of variance was used to examine clinical differences between PTSD cases, sub-threshold cases and the remainder of the sample. Results: Using the recommended cut-point of 50, the PCL had a sensitivity of 0.40, specificity of 0.97 and positive predictive value of 0.57. However, these values changed to 0.90, 0.87 and 0.45, respectively, when the optimal cut-point of 36 was used. Conclusion: With an adjusted cut-point the PCL is an acceptable and brief screening instrument for PTSD in older adults.",
	pages = "670-673(4)",
	url = "http://www.ingentaconnect.com/content/routledg/camh/2008/00000012/00000005/art00018"
	doi = "doi:10.1080/13607860802343274"
}