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Construct validity and reliability of the Tachikawa Resilience Scale in the Japan Ground Self-Defense Force personnel

Authors Saito T, Nagamine M, Shigemura J, Tanichi M, Toda H, Shimizu K, Yoshino A

Received 19 April 2018

Accepted for publication 27 July 2018

Published 2 October 2018 Volume 2018:14 Pages 2505—2510

DOI https://doi.org/10.2147/NDT.S170778

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Andrew Yee

Peer reviewer comments 4

Editor who approved publication: Dr Taro Kishi


Taku Saito,1 Masanori Nagamine,2 Jun Shigemura,1 Masaaki Tanichi,1 Hiroyuki Toda,1 Kunio Shimizu,2 Aihide Yoshino1

1Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan; 2Division of Behavioral Science, National Defense Medical College Research Institute, Tokorozawa, Saitama, Japan

Purpose: The importance of resilience as a mental health outcome has been reported in recent occupational health studies, although resilience is yet to be assessed in the Japan Ground Self-Defense Force (JGSDF) population. Our objective was to test whether the Tachikawa Resilience Scale (TRS), developed to measure the resilience of Japanese individuals, is useful for evaluating the resilience of the JGSDF.
Patients and methods: We performed a cross-sectional study of 353 JGSDF peacekeeping personnel engaged in the United Nations Mission in the Republic of South Sudan from November 2015 to May 2016. We evaluated resilience using two psychological measures: the TRS and the Resilience Competence Scale – Japanese Short Version (RCS-JS). To verify the construct validity of the TRS, we performed exploratory factor analysis and confirmatory factor analysis. We subsequently conducted hierarchical multivariate regression analysis to evaluate the relationship of the TRS and the RCS-JS with psychological distress measured by the Japanese version of the Kessler Psychological Distress Scale.
Results: Of those recruited, 281 (79.6%) agreed to participate. The exploratory factor analysis revealed a one-factor model of the TRS. The confirmatory factor analysis model showed good fit (ratio of χ2 to the degrees of freedom =1.409, P=0.105, comparative fit index =0.994, root mean square error of approximation =0.038). Both the TRS and the RCS-JS showed a significant inverse correlation with the Kessler Psychological Distress Scale, and the regression coefficient of the TRS was equivalent to that of the RCS-JS.
Conclusion: We confirmed the construct validity and reliability of the TRS when applied to the JGSDF, and demonstrated the usefulness of the TRS in this population.

Keywords: psychological resilience, psychological measure, United Nations peacekeeping operations, mental health, occupational health

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