Cited by 1,799Posttraumatic Stress Disorder ResearchAnxiety, Depression, Psychometrics, Treatment, Cognitive ProcessesSleep and related disorders

The Clinician-Administered PTSD Scale for DSM–5 (CAPS-5): Development and initial psychometric evaluation in military veterans.

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Weathers, Frank W., Bovin, Michelle J., Lee, Daniel J., Sloan, Denise M., Schnurr, Paula P., Kaloupek, Danny G., Keane, Terence M., Marx, Brian P.·2018·Psychological Assessment

Abstract

The Clinician-Administered PTSD Scale (CAPS) is an extensively validated and widely used structured diagnostic interview for posttraumatic stress disorder (PTSD). The CAPS was recently revised to correspond with PTSD criteria in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5; American Psychiatric Association, 2013). This article describes the development of the CAPS for DSM-5 (CAPS-5) and presents the results of an initial psychometric evaluation of CAPS-5 scores in 2 samples of military veterans (Ns = 165 and 207). CAPS-5 diagnosis demonstrated strong interrater reliability (к = .78 to 1.00, depending on the scoring rule) and test-retest reliability (к = .83), as well as strong correspondence with a diagnosis based on the CAPS for DSM-IV (CAPS-IV; к = .84 when optimally calibrated). CAPS-5 total severity score demonstrated high internal consistency (α = .88) and interrater reliability (ICC = .91) and good test-retest reliability (ICC = .78). It also demonstrated good convergent validity with total severity score on the CAPS-IV (r = .83) and PTSD Checklist for DSM-5 (r = .66) and good discriminant validity with measures of anxiety, depression, somatization, functional impairment, psychopathy, and alcohol abuse (rs = .02 to .54). Overall, these results indicate that the CAPS-5 is a psychometrically sound measure of DSM-5 PTSD diagnosis and symptom severity. Importantly, the CAPS-5 strongly corresponds with the CAPS-IV, which suggests that backward compatibility with the CAPS-IV was maintained and that the CAPS-5 provides continuity in evidence-based assessment of PTSD in the transition from DSM-IV to DSM-5 criteria. (PsycINFO Database Record

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  • The CAPS-5 is the most widely used symptom severity measure for PTSD and comprises 30 items assessing symptom severity over the previous week.

    “The most widely used symptom severity measure is the CAPS-5 60 , which comprises 30 items assessing symptom severity over the previous week.”

    From The clinical characterization of the adult patient with an anxiety or related disorder aimed at personalization of management (2021) · cites this paper as [60]

    The Abstract describes the CAPS as widely used and the CAPS-5 as a measure of PTSD symptom severity, but does not establish that the CAPS-5 is the most widely used measure. The Results (Internal consistency; page unavailable) discuss 20 symptom items, not 30 symptom-severity items. The scoring description uses monthly frequency thresholds; it does not support the claimed previous-week assessment period. (LLM, conf=0.86)

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  • The Clinically Administered PTSD Scale for DSM-5 has interrater reliability K=0.78-1.0 (high) and discriminant validity rs=0.02-0.54 (moderate).

    “Interrater reliability K=0.78-1.0 (high) discriminant validity: rs=0.02−0.54 (moderate) [100]”

    From Frontal Pole Neuromodulation for Impulsivity and Suicidality in Veterans With Mild Traumatic Brain Injury and Common Co-Occurring Mental Health Conditions: Protocol for a Pilot Randomized Controlled Trial (2024) · cites this paper as [100]

    The Results sections on interrater reliability and convergent and discriminant validity report the stated CAPS-5 ranges: κ = .78 to 1.0 and rs = .02 to .54. However, the paper calls correlations of .33 to .54 moderate and those of .02 and .18 weak, so describing the entire discriminant-validity range as moderate overstates the finding. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • The PCL-5 has demonstrated strong psychometric performance in civilian and veteran samples.

    “the PtsD checklist for DsM-5 (Pcl-5) was used to quantify overall posttraumatic symptom burden and symptom-cluster scores for cluster B (intrusion), cluster c (avoidance), cluster D (negative alterations in cognition and mood), and cluster e (hyperarousal/reactivity); the Pcl-5 has demonstrated strong psychometric performance in civilian and veteran samples (Blevins et al. 2015;Bovin et al. 2016;W”

    From Feasibility, tolerability, and preliminary effectiveness of an accelerated bilateral intermittent theta-burst stimulation protocol in adults with posttraumatic stress disorder and comorbid depressive disorder following mild traumatic brain injury (2026) · cites this paper as Weathers et al. 2018

    The Method (Measures: Sample 1; page not available) says PCL-5 scores have excellent psychometric properties and reports an internal-consistency alpha of .93. The Results (Convergent and discriminant validity) also report a strong correlation with CAPS-5 in the veteran sample. Our copy does not explicitly establish psychometric performance in civilian samples; its separate discussion of the PCL-C is not evidence for that part of the PCL-5 claim. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • The PCL-5 is a 20-item self-report questionnaire that assesses the presence and severity of PTSD symptoms.

    “The PCL-5 [54] is a 20-item self-report questionnaire that assesses the presence and severity of Posttraumatic Stress Disorder (PTSD) symptoms.”

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Research works printed but not linked: 2

  1. Kline RB 2011 Principles and practice of structural equation modeling 3 New York, NY Guilford Press
  2. Weathers FW Blake DD Schnurr PP Kaloupek DG Marx BP Keane TM 2013 The Clinician-Administered PTSD Scale for DSM–5 (CAPS-5) Retrieved from www.ptsd.va.gov PMC5805662 28493729

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Authors
Weathers, F. W., Bovin, M. J., Lee, D. J., Sloan, D. M., Schnurr, P. P., Kaloupek, D. G., Keane, T. M., & Marx, B. P.
Affiliations
  • Auburn University (US)
  • VA Boston Healthcare System (US)
Venue
Psychological Assessment
Published
2018-03
Volume
30
Issue
3
Pages
383-395
ISSN
  • 1040-3590 (ISSN-L)
  • 1939-134X
OpenAlex
W2612417324
Cited by
1,799
References
42
Citations by year
2026: 228 · 2025: 275 · 2024: 236 · 2023: 235 · 2022: 232 · 2021: 229 · 2020: 191 · 2019: 102 · 2018: 46 · 2017: 14 · 2016: 2 · 2015: 4 · 2013: 1
FWCI
119.73
Type
journal article
Language
en
Open access
Locations
  • Psychological Assessment (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
U.S. Department of Veterans Affairs (I01CX000467)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Keywords
CAPS-5, post-traumatic stress disorder, DSM-5 PTSD criteria, military veterans, diagnostic interview, inter-rater reliability, test-retest reliability, convergent validity, discriminant validity, PTSD symptom severity
MeSH terms
Adult, Aged, Female, Humans, Interviews as Topic, Male, Middle Aged, Psychiatric Status Rating Scales, Psychometrics, Stress Disorders, Post-Traumatic, Veterans, Reproducibility of Results, Diagnostic and Statistical Manual of Mental Disorders, Veterans Health

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