Cross-cultural Adaption and Validity of the “Patient Specific Functional Scale” / Kulturelle Adaption und Validierung der deutschen Version der “Patient Specific Functional Scale”

Abstract

Objective: Measurement of activity and participation related outcomes play an important role in rehabilitation of low back pain. Therefore the „Patient Specific Functional Scale»(PSFS) was developed to assess individual, patient related activities. The aim of this study is the cultural adaptation and validation of the PSFS for German speaking countries.Method: A cultural translation and adaptation process was carried out in accordance with standardized guidelines. The internal and external responsiveness and the construct validity adjustment to the German version pertaining to patients with lumbar back pain was examined in comparison to the «Oswestry Disability Index»(ODI).Results: In both groups the PSFS proved itself to be more sensitive in comparison to the ODI. The internal responsiveness of ODI improved ES= -0.75), (non-improved ES= -0.38). PSFS (improved ES= 1.96), (non-improved ES 0.77). The external responsiveness of ODI (AUC= 0.59), of PSFS (AUC= 0.83) (P= 0.0068). Constructs of both measurement instruments have a weak and a moderate correlation on measuring point 1 (r= -0.28) and 2 (r= -0.58).Conclusion: The German version of PSFS proves itself to be a feasible model and a method of high sensitivity in evaluating changes in the functional ability of patients with lumbar back pain. The instrument can be recommended to be used in clinical practice.

Construct Validity and Validity to Change of the Patient-Specific Functional Scale in Patients with Shoulder and Low Back Pain: A Clinimetric Study

“…The moderate correlations found for change scores between baseline and follow-up at 6 months were also similar to ours (between baseline and our last measurement point at 1 year), although the use of different time frames may complicate this comparison. Similar results regarding construct validity were also found by Heldmann et al [29] in LBP-patients. They used the Oswestry Disability Index (ODI) as reference measure and found low correlations at baseline and moderate correlations at follow-up.…”

Evaluation eines frühen interdisziplinären multimodalen Assessments für Patienten mit Schmerzen

“…In der Interventionsgruppe mit IMA werden zusätzliche Fragebögen (Checkliste des strukturierten klinischen Interview für DSM-IV, SKID, [ 28 ]); Skala Somatisierung des Patient Health Questionnaire [ 29 ]) sowie die Befunde der 3 Berufsgruppen (einschließlich der multiaxialen Schmerzklassifikation für psychische Faktoren [ 23 ] sowie die patientenspezifische Funktionsskala [ 30 ]) und das Ergebnis der Teambesprechung mit dem Patienten (inklusive der Abweichung von den initialen Empfehlungen) dokumentiert.…”

Schmerzphysiotherapie im multimodalen Team

“…Hierfür bewährt hat sich die ‚Patientenspezifische Funktionsskala' (PSFS). In der PSFS soll der Patient drei objektiv messbare Tätigkeiten einschätzen, die ihm momentan Schwierigkeiten bereiten [6]. Die PSFS gibt so erste Hinweise auf eine mögliche Zielsetzung, offenbart Ressourcen und dient als Verlaufsparameter während der Therapie.…”