A prospective pilot investigation of the Zulu translation of the numerical pain rating scale (NRS-101) and the patient-specific functional scale (PSFS) with respect to their concurrent validity when compared to their English counterparts

Abstract

The purpose of this study was to determine concurrent validity of the Zulu translations of the English Numerical Pain Rating Scale-101 and the Patient Specific Functional Scale. The Numerical Pain Rating Scale-101 and the Patient Specific Functional Scale (ENRS-101 and the EPSFS) were translated into Zulu (ZNRS-101 1.0 and ZPSFS1.0) and were tested for face validity by means of a focus group session.