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Measurement in Practice: Posttraumatic Stress Disorder Symptom Assessment
Please note that this section
is an archive and is no longer being updated.
Prepared by Kimberly Raiford Wildes, DrPH, MA
Comparison of Instruments
The chart below shows six measures for assessing symptoms associated with posttraumatic
stress disorder (PTSD). Several criteria, on four pages, provide a overview of each
of the instruments. Using the navigation controls at the top of the chart, one may examine
an instrument among these criteria, or easily compare vertically, all the instruments for a
given category.
This first set of criteria includes a brief explanation of each instrument's Purpose, followed by
the item characteristics, including the number and type of scale(s) used for the response. Finally,
Scoring is touched on in the last column.
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Criteria Group:
[1]
[2]
[3]
[4]
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Next Criteria >>
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Name, Author, Publication Year
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Purpose
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Number of Items & Scale Format
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Scoring
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Clinician-Administered PTSD Scale (CAPS)D.D. Blake et al., 1990
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Measurement of PTSD and Acute Stress Disorder symptoms related to up to 3 traumatic events
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30 items; Dichotomous, 3-point scale, and 5-point scale from 0 to 4.
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Frequency and intensity scores ranging from 0 to 68 and 0 to 136, respectively; additional scoring rules are available; scoring is lengthy
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Impact of Event Scale (IES)M. Horowitz et al., 1979
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Measurement of PTSD symptoms related to a trauma
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15 items; 4-point scale (0, 1, 3, 5)
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Subscale scores for Intrusion, Avoidance, and Hyperarousal; Total score range 0 to 75.
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Mississippi Scale for Combat-Related PTSDT.M. Keane, 1988
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Measurement of combat-related PTSD symptoms.
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35 items; 5-point Likert scale
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Total score from 35 to 175.
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Mississippi Scale for PTSD - Civilian VersionT.M. Keane, 1988
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Measurement of PTSD symptoms related to a trauma in civilians
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39 items; 5-point scale from 1 to 5
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Total score from 39 to 195
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Davidson Trauma Scale (DTS)J.R.T. Davidson, 1997
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Measurement of PTSD symptoms related to a trauma
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17 items; 5-point scale from 0 to 4
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Frequency score (0 to 68), severity score (0 to 68), and total score (0 to 136)
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PTSD Checklist - Military (PCL-M)F. Weathers, 1991
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Measurement of PTSD symptoms among veterans.
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17 items; 5-point scale from 1 to 5
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Total severity score from 17 to 85; additional scoring rules available
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