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Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries.

Publication ,  Journal Article
Ziolkowski, NI; Pusic, AL; Fish, JS; Mundy, LR; Wong She, R; Forrest, CR; Hollenbeck, S; Arriagada, C; Calcagno, M; Greenhalgh, D; Klassen, AF
Published in: Plast Reconstr Surg
September 2020

BACKGROUND: Each year, millions of individuals develop scars secondary to surgery, trauma, and/or burns. Scar-specific patient-reported outcome measures to evaluate outcomes are needed. To address the gap in available measures, the SCAR-Q was developed following international guidelines for patient-reported outcome measure development. This study field tested the SCAR-Q and examined its psychometric properties. METHODS: Patients aged 8 years and older with a surgical, traumatic, and/or burn scar anywhere on their face or body were recruited between March of 2017 and April of 2018 at seven hospitals in four countries. Participants answered demographic and scar questions, the Fitzpatrick Skin Typing Questionnaire, the Patient and Observer Scar Assessment Scale (POSAS), and the SCAR-Q. Rasch measurement theory was used for the psychometric analysis. Cronbach's alpha, test-retest reliability, and concurrent validity were also examined. RESULTS: Consent was obtained from 773 patients, and 731 completed the study. Participants were aged 8 to 88 years, and 354 had surgical, 184 had burn, and 199 had traumatic scars. Analysis led to refinement of the SCAR-Q Appearance, Symptoms, and Psychosocial Impact scales. Reliability was high, with person separation index values of 0.91, 0.81, and 0.79; Cronbach alpha values of 0.96, 0.91, and 0.95; and intraclass correlation coefficient values of 0.92, 0.94, and 0.88, respectively. As predicted, correlations between POSAS scores and the Appearance and Symptom scales were higher than those between POSAS and Psychosocial Impact scale scores. CONCLUSIONS: With increasing scar revisions, a scar-specific patient-reported outcome measure is needed to measure outcomes that matter to patients from their perspective. The SCAR-Q represents a rigorously developed, internationally applicable patient-reported outcome measure that can be used to evaluate scars in research, clinical care, and quality improvement initiatives.

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Published In

Plast Reconstr Surg

DOI

EISSN

1529-4242

Publication Date

September 2020

Volume

146

Issue

3

Start / End Page

331e / 338e

Location

United States

Related Subject Headings

  • Young Adult
  • United States
  • Surgery
  • Skin
  • Self Report
  • Psychometrics
  • Postoperative Complications
  • Patient Reported Outcome Measures
  • New Zealand
  • Middle Aged
 

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Ziolkowski, N. I., Pusic, A. L., Fish, J. S., Mundy, L. R., Wong She, R., Forrest, C. R., … Klassen, A. F. (2020). Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries. Plast Reconstr Surg, 146(3), 331e-338e. https://doi.org/10.1097/PRS.0000000000007078
Ziolkowski, Natalia I., Andrea L. Pusic, Joel S. Fish, Lily R. Mundy, Richard Wong She, Christopher R. Forrest, Scott Hollenbeck, et al. “Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries.Plast Reconstr Surg 146, no. 3 (September 2020): 331e-338e. https://doi.org/10.1097/PRS.0000000000007078.
Ziolkowski NI, Pusic AL, Fish JS, Mundy LR, Wong She R, Forrest CR, et al. Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries. Plast Reconstr Surg. 2020 Sep;146(3):331e-338e.
Ziolkowski, Natalia I., et al. “Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries.Plast Reconstr Surg, vol. 146, no. 3, Sept. 2020, pp. 331e-338e. Pubmed, doi:10.1097/PRS.0000000000007078.
Ziolkowski NI, Pusic AL, Fish JS, Mundy LR, Wong She R, Forrest CR, Hollenbeck S, Arriagada C, Calcagno M, Greenhalgh D, Klassen AF. Psychometric Findings for the SCAR-Q Patient-Reported Outcome Measure Based on 731 Children and Adults with Surgical, Traumatic, and Burn Scars from Four Countries. Plast Reconstr Surg. 2020 Sep;146(3):331e-338e.

Published In

Plast Reconstr Surg

DOI

EISSN

1529-4242

Publication Date

September 2020

Volume

146

Issue

3

Start / End Page

331e / 338e

Location

United States

Related Subject Headings

  • Young Adult
  • United States
  • Surgery
  • Skin
  • Self Report
  • Psychometrics
  • Postoperative Complications
  • Patient Reported Outcome Measures
  • New Zealand
  • Middle Aged