22 research outputs found
Neck Pain and Disability Scale and the Neck Disability Index: reproducibility of the Dutch Language Versions
The first aim of this study was to translate the Neck Pain and Disability Scale (NPAD) from English into Dutch producing the NPADâDutch Language Version (DLV). The second aim was to analyze testâretest reliability and agreement of the NPADâDLV and the Neck Disability Index (NDI)âDLV. The NPAD was translated according to established guidelines. Thirty-four patients (mean age 37.5 years, 68% female) with chronic neck pain (CNP), within an outpatient rehabilitation setting, participated in this study. The NPADâDLV and the NDIâDLV were filled out twice with a mean testâretest interval of 18 days. The intraclass correlation coefficient of the NPADâDLV was 0.76 (95% confidence interval (CI) 0.57â0.87) and of the NDIâDLV 0.84 (95% CI 0.69â0.92). The limits of agreement of the NPADâDLV and the NDIâDLV were, respectively, ±20.9 (scale 0â100) and ±6.5 (scale 0â50). The reliability of the NPADâDLV and the NDIâDLV was acceptable for patients with CNP. The variation (âinstabilityâ) in the NPADâDLV total scores was relatively large and larger than the variation of the NDIâDLV