Mood Emot 2023 Nov; 21(3): 71-79   https://doi.org/10.35986/me.2023.21.3.71
Development of Lifestyle Scale for Psychiatric Patients with Metabolic Syndrome
Young-Wook Choi, MD1 , Bo-Hyun Yoon, MD, PhD1 , Hangoeunbi Kang, MD1 , Kyungmin Kim, MD1 , Yuran Jeong, MD1 , Hyunju Yun, MD1 , Jye-Heon Song, MD1 , Young-Hwa Sea, MD1 , Suhee Park, MD1 , Se-Won Kang, PhD2
1Department of Psychiatry, Naju National Hospital, Naju, 2Department of Adult Nursing, Dongseo University, Busan, Korea
Correspondence to: Bo-Hyun Yoon, MD, PhD
Department of Psychiatry, Naju National Hospital, 1328-31 Senam-ro, Sanpo-myeon, Naju 58213, Korea
TEL +82-61-330-4101 FAX +82-61-330-5150 E-mail yoonbh@chollian.net ORCID https://orcid.org/0000-0002-3882-7930
Yuran Jeong, MD
Department of Psychiatry, Naju National Hospital, 1328-31 Senam-ro, Sanpo-myeon, Naju 58213, Korea
TEL +82-61-330-4101 FAX +82-61-330-5150 E-mail yu-ran2@hanmail.net ORCID https://orcid.org/0000-0002-0087-0992
Received: October 31, 2023; Accepted: November 1, 2023; Published online: November 30, 2023.
© Korean Society for Affective Disorders. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Background: This study, examines the applicability of the Lifestyle Evaluation Tool for Patients with Metabolic Syndrome (LET-PMS) questionnaire, originally developed for general population, on psychiatric patients with metabolic syndrome.
Methods: The study included 320 patients diagnosed with schizophrenia spectrum disorder (N=190), bipolar spectrum disorder (N=65), and depressive disorder (N=65). They were provided assignments using 36 items from the LET-PMS questionnaire and various established scales. The evaluation encompassed psychometric properties of reliability, exploratory factor, and confirmatory factor analysis.
Results: We refined the LET-PMS questionnaire by eliminating six items through a reliability test. The resultant questionnaire exhibited six factors. The overall Cronbach’s alpha value was 0.896, with factor-specific reliability coefficients ranging from 0.730 to 0.859. Based on confirmatory factor analysis of the adapted LET-PMS, the root mean square error of approximation was 0.069 (0.05-1.1). Goodness-of-fit and comparative fit indexes were 0.815 and 0.821, respectively. All 30 items met the criteria for suitable configuration.
Conclusion: The LET-PMS questionnaire demonstrated robust internal consistency and sound structural validity, making it suitable for psychiatric patients with metabolic syndrome.
Keywords: Metabolic syndrome; Mental disorders; Life style; Surveys and questionnaires; Validation study

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