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Open Access Research article

Development and applicability of Hospital Survey on Patient Safety Culture (HSOPS) in Japan

Shinya Ito1, Kanako Seto1, Mika Kigawa1, Shigeru Fujita1, Toshihiko Hasegawa2 and Tomonori Hasegawa1*

Author Affiliations

1 Department of Social Medicine, Toho University School of Medicine, Tokyo, Japan

2 Department of Healthcare Management, Nippon Medical University, Tokyo, Japan

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BMC Health Services Research 2011, 11:28  doi:10.1186/1472-6963-11-28

Published: 7 February 2011

Abstract

Background

Patient safety culture at healthcare organizations plays an important role in guaranteeing, improving and promoting overall patient safety. Although several conceptual frameworks have been proposed in the past, no standard measurement tool has yet been developed for Japan.

Methods

In order to examine possibilities to introduce the Hospital Survey on Patient Safety Culture (HSOPS) in Japan, the authors of this study translated the HSOPS into Japanese, and evaluated its factor structure, internal consistency, and construct validity. Healthcare workers (n = 6,395) from 13 acute care general hospitals in Japan participated in this survey.

Results

Confirmatory factor analysis indicated that the Japanese HSOPS' 12-factor model was selected as the most pertinent, and showed a sufficiently high standard partial regression coefficient. The internal reliability of the subscale scores was 0.46-0.88. The construct validity of each safety culture sub-dimension was confirmed by polychoric correlation, and by an ordered probit analysis.

Conclusions

The results of the present study indicate that the factor structures of the Japanese and the American HSOPS are almost identical, and that the Japanese HSOPS has acceptable levels of internal reliability and construct validity. This shows that the HSOPS can be introduced in Japan.