Clinician-Administered PTSD Scale

Information about Measure
First Name Devon
Last Name Hinton
Email devon_hinton@hms.harvard.edu
Affiliation Department of Psychiatry, Massachusetts General Hospital
Other means of contacting author (e.g., website, Academia.edu, ResearchGate)
Mental health assessment tool that was adapted/developed/validated Clinician-Administered PTSD Scale
Mental health condition assessed Trauma- and stressor-related disorders
Idiom of distress included, if any Not Applicable
Lifestage of interest Adult (General)
Age range (age – age)
Country or countries where tool was developed/adapted/validated United States with Cambodian Refugees
Language(s) of the adapted/developed/validated tool Khmer
Clinical or community sample? Clinical
Subpopulation in which tool was developed/validated (e.g., tool was developed and tested among middle-class women)? Refugees attending a psychiatric clinic in the United States.
Development procedures Culturally adapted
If validated, what was the gold standard?
Description of other development procedures, if applicable
Cronbach’s alpha .92
Sensitivity
Spec
Other information about tool (e.g., additional psychometrics [NPV, PPV, Youden’s index, diagnostic odds ratio]) The CAPS demonstrated good interrater (intraclass correlation coefficient [ICC] = .92) and test–retest (ICC = .84) reliability. For the 179 patients interviewed by the trained social worker, the CAPS coefficient alpha was .92, and the item–total correlations ranged from .48 to .85. The two items with the lowest item–subscale correlations were “inability to recall important aspects of the trauma” (.47) and “restricted range of affect” (.52).
Sub-scales:
Reexperiencing (cluster B: items 1–5): Coefficient alpha .91; Corrected item − total correlation .69–.84
Avoidance and numbing (cluster C: items 6–12): Coefficient alpha .87; Corrected item − total correlation
.47–.73
Hyperarousal (cluster D: items 13–17): Coefficient alpha .86; Corrected item − total correlation .56–.75
Links to development/adaptation/validation studies and/or previous studies using the tool Hinton, Devon E., Dara Chhean, Vuth Pich, M. H. Pollack, Scott P. Orr, and Roger K. Pitman. 2006. “Assessment of Posttraumatic Stress Disorder in Cambodian Refugees Using the Clinician-Administered PTSD Scale: Psychometric Properties and Symptom Severity.” Journal of Traumatic Stress 19 (3): 405–9. https://doi.org/10.1002/jts.20115.
Notes when administering the tool Tool was translated and back-translated for use among Cambodian refugee populations in the United States. Only patients who were exposed to the Cambodian genocide (1975–1979) were included in the study. Of the 179 patients surveyed, 62% (111/179) were women. The average age was 55.4 years (SD = 8.1). Patients had lived in the United States an average of 17.8 years (SD = 3.9), and eight patients spoke English with some degree of fluency (i.e., could communicate in a medication session without need of translation).
The CAPS provides ratings of the frequency and intensity of each of the 17 DSM-IV–based PTSD symptoms on 0–4 Likert-type scales, thereby allowing for a maximal score of 8 for each symptom (Weathers et al., 2001) and a total-score range from 0 to 136. Weathers and associates (2001) suggested the following score categories: 0–19: asymptomatic/few symptoms; 20–39: mild PTSD/subthreshold; 40–59: moderate PTSD/threshold; 60–79: severe PTSD symptoms; and > 80: extreme PTSD symptoms.
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