Neck Pain and Disability Scale and the Neck Disability Index: reproducibility of the Dutch Language Versions |
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Authors: | Wim Jorritsma Grietje E de Vries Jan H B Geertzen Pieter U Dijkstra Michiel F Reneman |
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Affiliation: | (1) Center for Rehabilitation, University Medical Center Groningen, University of Groningen, PO Box 30 002, 9750 RA Haren, Groningen, The Netherlands;(2) Graduate School for Health Research, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;(3) Center for Human Movement Sciences, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands;(4) Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands |
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Abstract: | The first aim of this study was to translate the Neck Pain and Disability Scale (NPAD) from English into Dutch producing the
NPAD–Dutch Language Version (DLV). The second aim was to analyze test–retest reliability and agreement of the NPAD–DLV and
the Neck Disability Index (NDI)–DLV. 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 NPAD–DLV and the NDI–DLV were filled out twice with a mean test–retest interval of 18 days. The intraclass correlation
coefficient of the NPAD–DLV was 0.76 (95% confidence interval (CI) 0.57–0.87) and of the NDI–DLV 0.84 (95% CI 0.69–0.92).
The limits of agreement of the NPAD–DLV and the NDI–DLV were, respectively, ±20.9 (scale 0–100) and ±6.5 (scale 0–50). The
reliability of the NPAD–DLV and the NDI–DLV was acceptable for patients with CNP. The variation (‘instability’) in the NPAD–DLV
total scores was relatively large and larger than the variation of the NDI–DLV. |
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Keywords: | Neck pain Neck Pain and Disability Scale Neck Disability Index Reliability Agreement |
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