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Translation, Inter-rater Reliability, Agreement, and Internal Consistency of the Japanese Version of the Cumulated Ambulation Score in Patients after Hip Fracture Surgery

Research output: Contribution to journalJournal articleResearchpeer-review

  • Takahisa Ogawa
  • Hiroto Hayashi
  • Toshiki Kishimoto
  • Shota Mashimo
  • Yasuaki Kusumoto
  • Keisuke Nakamura
  • Takuya Aoki
  • Janelle Moross
  • Morten Tange Kristensen
  • Hideaki Ishibashi
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Objectives: The aim of this study was to translate the Cumulated Ambulation Score (CAS) from English into Japanese in cooperation with different types of healthcare providers and to investigate its inter-rater reliability and internal consistency.

Methods: Two physical therapists at each of three general hospitals in Japan measured the mobility of 50 consecutive post-operative hip fracture patients on two occasions between 2 and 6 days after surgery using the Japanese version of the CAS (CAS-JP). We analyzed the inter-rater reliability and agreement using both the linear weighted kappa and the interclass correlation coefficient; we also analyzed the internal consistency using Cronbach's alpha coefficient.

Results: The mean age of patients was 81 (SD: 11.6) years and 82% were women. Approximately half of the patients had severe cognitive impairment. Kappa was ≥ 0.93 for the three mobility activities and for the total CAS-JP score, the percentage agreement was ≥ 0.98, the ICC was ≥ 0.95, and Cronbach's alpha coefficient was 0.85.

Conclusions: We found that the CAS-JP possessed good inter-rater reliability, agreement, and internal consistency. The CAS-JP is a reliable and easy-to-use evaluation tool suitable for daily clinical practice across different healthcare providers to monitor mobility in older hip fracture patients in Japan. We suggest that CAS-JP be evaluated in future studies for use in younger patients and in other patient groups with mobility problems.

Original languageEnglish
JournalProgress in rehabilitation medicine
Pages (from-to)20200030
Number of pages12
Publication statusPublished - Dec 2020

Bibliographical note

©2020 The Japanese Association of Rehabilitation Medicine.

ID: 61788758