Validation and reliability of a Japanese version of the Simple Shoulder Test: a cross-sectional study

Takuya Sekiguchi, MD, PhD; Yoshihiro Hagiwara, MD, PhD; Akira Ando, MD, PhD; Kenji Kanazawa, MD, PhD; Kazuaki Suzuki, MD; Masashi Koide, MD, PhD; Yutaka Yabe, MD, PhD; Satsuki Onoda, MD, PhD; Eiji Itoi, MD, PhD

JSES International (Mar 2021)

Validation and reliability of a Japanese version of the Simple Shoulder Test: a cross-sectional study

Takuya Sekiguchi, MD, PhD,
Yoshihiro Hagiwara, MD, PhD,
Akira Ando, MD, PhD,
Kenji Kanazawa, MD, PhD,
Kazuaki Suzuki, MD,
Masashi Koide, MD, PhD,
Yutaka Yabe, MD, PhD,
Satsuki Onoda, MD, PhD,
Eiji Itoi, MD, PhD

Affiliations

Takuya Sekiguchi, MD, PhD: Department of Orthopedic Surgery, JR Sendai Hospital, Sendai, Japan; Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan
Yoshihiro Hagiwara, MD, PhD: Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan; Corresponding author: Yoshihiro Hagiwara, MD, PhD, Department of Orthopaedic Surgery, Tohoku University School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
Akira Ando, MD, PhD: Department of Orthopedic Surgery, Matsuda Hospital, Sendai, Japan
Kenji Kanazawa, MD, PhD: Department of Orthopedic Surgery, Miyagi South Medical Center, Sendai, Japan
Kazuaki Suzuki, MD: Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan
Masashi Koide, MD, PhD: Department of Orthopedic Surgery, Matsuda Hospital, Sendai, Japan
Yutaka Yabe, MD, PhD: Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan
Satsuki Onoda, MD, PhD: Department of Orthopedic Surgery, Iwate Prefectural Central Hospital, Morioka, Japan
Eiji Itoi, MD, PhD: Department of Orthopedic Surgery, Tohoku University School of Medicine, Sendai, Japan

Journal volume & issue: Vol. 5, no. 2
pp. 334 – 337

Abstract

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Background: The Simple Shoulder Test (SST) is a widely used patient-reported outcome assessment. The purpose of this study was to develop and validate a Japanese version of the SST (SST-Jp). Methods: A two-stage observational study was conducted to validate the cross-cultural adaptation of the SST. A total of 100 patients with shoulder disorders completed the SST-Jp; the Disability of Arm, Shoulder, and Hand assessment; and the Medical Outcomes Short-Form 36 (SF-36) at an initial visit. Thirty-four of the patients repeated the SST-Jp one week after the first examination. The test-retest reliability was quantified using the interclass correlation coefficient, and Cronbach’s alpha (α) was calculated to assess internal consistency. Construct validity was assessed using Spearman’s rank correlation coefficient. Results: The internal consistency of the SST-Jp was very high (α = 0.826). The interclass correlation coefficient of the SST-Jp was also high (0.859). There was a strong, positive correlation between the Disability of Arm, Shoulder, and Hand and the SST-Jp (r = 0.717, P < .001). The SST-Jp was significantly correlated with most of the SF-36 subscales. The correlations of the SST-Jp with physical subscales of the SF-36 were stronger than those with the other subscales. Conclusions: The SST-Jp was found to be a valid and reliable measurement for shoulder joint pain and function assessment among the Japanese population.

Published in JSES International

ISSN: 2666-6383 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Surgery: Orthopedic surgery; Medicine: Internal medicine: Specialties of internal medicine: Diseases of the musculoskeletal system
Website: https://www.journals.elsevier.com/jses-international

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