Reliability of modified Rankin Scale-Introduction of a guidance scheme and a questionnaire written in Japanese-

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  • modified Rankin Scaleの信頼性に関する研究―日本語版判定基準書および問診票の紹介―
  • —Introduction of a guidance scheme and a questionnaire written in Japanese—
  • ―日本語版判定基準書および問診票の紹介―

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The modified Rankin Scale (mRS) is commonly employed in the world as a measure of global outcome after stroke. The purpose of the present study was to investigate the reliability of the mRS for the first time in the current clinical setting in Japan. We developed a guidance scheme for the mRS and a questionnaire corresponding to it. Nine neurologists interviewed 46 patients with cerebral infarction on the basis of the questionnaire. This interview was recorded on videotape. In order to examine the reliability of the rating scale, 20 raters (10 neurologists, 6 nurses and 4 physiotherapists) watched the videotapes and assessed the mRS twice at an interval of approximately 8 weeks. The agreement between the raters, as evaluated from the intraclass correlation coefficient, was found to be satisfactory with values of 0.947 for neurologists and 0.963 for health care professionals. The reproducibility at an interval of ca. 8 weeks was also satisfactory with values of 0.865 and 0.871, respectively. The above results suggest that our guidance scheme and questionnaire are useful for ensuring the quality of assessments of the mRS, and are applicable to clinical studies made in the current clinical setting in Japan. Our findings have already been published in the English language (Cerebrovasc Dis 21: 271, 2006). However, in order to disseminate assessment by the mRS using our guidance scheme and questionnaire in the clinical setting in Japan, the Japanese versions of these tools are also required. This is why we now publish this study in Japanese.

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