Neck Pain and Disability Scale（NPDS）日本語版の開発

The Japanese Translation and Cultural Adaptation of the Neck Pain and Disability Scale (NPDS)

　背景：本研究の目的は，頚部痛患者の特異的QOL尺度であるNeck Pain and Disability Scale(NPDS)の日本語版を開発することである．

　対象と方法：順翻訳，逆翻訳，原作者との協議を行い，翻訳版を作成した．外来通院患者20名を対象にパイロットテストを実施し，表現の適切性，内容的妥当性，実施可能性を検討した．

　結果：欠損割合は0～5%であり，回答時間は平均4.7分であった．

　まとめ：原作者の意図を損なわないように配慮しつつ，日本人患者にとって理解しやすいように頚部のイラスト，説明書きを加えるなどの改訂を行い，NPDS日本語版が完成した．

　Background：The aim of this study was to develop a Japanese version of the Neck Pain and Disability Scale (NPDS).

　Methods：We developed a preliminary Japanese version by forward-translation of the original English version into Japanese, back-translation into English, and conducting a discussion with the original developer.　We then modified the original version by adding an illustration of the neck and a supplementary guide to make it easier to understand.

　Results：Finally, we conducted a pilot test and assessed patient acceptance, cross-cultural equivalence, and content validity in 20 patients who complained of neck pain.　The missing-data rate was 0-5%, and the average response time was 4.7 minutes.

　Conclusions：In conclusion,we developed a Japanese version of the NPDS,and a pilot study yielded satisfactory results.