Differential item functioning in the Observer Scale of the POSAS for different scar types.
Purpose: To investigate whether the Observer Scale of the Patient and Observer Scar Assessment Scale (POSAS) can serve as a generic measure for scar quality across different scar types.Methods: A collection of POSAS scores derived from several clinical trials on burn (n = 404), linear (n = 384), and...
| Publicado en: | Quality of Life Research Vol. 23; no. 7; pp. 2037 - 2046 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Sep2014
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103841382&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103841382 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09629343 GPQ jtl: Quality of Life Research issn: 09629343 maglogo: N pubinfo: dt: Sep2014 vid: 23 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103841382 NLM24510653 2012692456 10.1007/s11136-014-0637-4 NLM24510653 103841382 ppf: 2037 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Differential item functioning in the Observer Scale of the POSAS for different scar types. aug: au: van der Wal, Martijn B A Tuinebreijer, Wim E Lundgren-Nilsson, Asa Middelkoop, Esther van Zuijlen, Paul P M Lundgren-Nilsson, Åsa affil: Association of Dutch Burn Centers, Beverwijk, The Netherlands, mvanderwal@RKZ.nl. sug: subj: Cicatrix Pathology Health Status Indicators Physical Examination Questionnaires Differential Item Functioning Adolescence Adult Aged Aged, 80 and Over Child Child, Preschool Female Human Infant Male Middle Age Models, Statistical Observer Bias Psychometrics Young Adult Adolescent: 13-18 years Adult: 19-44 years Aged: 65+ years Aged, 80 & over Child: 6-12 years Child, Preschool: 2-5 years Infant: 1-23 months Middle Aged: 45-64 years Female Male ab: Purpose: To investigate whether the Observer Scale of the Patient and Observer Scar Assessment Scale (POSAS) can serve as a generic measure for scar quality across different scar types.Methods: A collection of POSAS scores derived from several clinical trials on burn (n = 404), linear (n = 384), and keloidal scars (n = 282) was analyzed using the partial credit model of the Rasch analysis package RUMM2030.Results: Differential item functioning (DIF) was observed for the Observer Scale of the POSAS between the three scar types for the items pliability, thickness, and surface area, which could be solved by item splitting. The items pigmentation and thickness showed disordered thresholds, considerable misfit, and unpredictability.Conclusion: Users of the Observer Scale of the POSAS must be aware that the raw scores obtained from burn, linear, and keloidal scars cannot be compared without the scar-specific DIF adjustment of the items pliability, thickness, and surface area. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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