RESEARCH METHODOLOGY PAPER The Indonesian version of the Medical Outcome Survey - Short Form 12 version 2 among patients with cardiovascular diseases Anggi Lukman Wicaksana MS, RN Assistant Professor 1,2 | Erika Maharani MD, Cardiologist, FIHA, Lecturer 3 | Nuzul Sri Hertanti MS, RN, Researcher 4,5 1 Department of Medical Surgical Nursing, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia 2 The Sleman Health and Demographic Surveillance System, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia 3 Department of Cardiology and Vascular Medicine, Faculty of Medicine, Public Health, and Nursing, Gadjah Mada University, Yogyakarta, Indonesia 4 Department of Biostatistics, Epidemiology, and Population Health, Faculty of Medicine, Public Health, and Nursing, Gadjah Mada University, Yogyakarta, Indonesia 5 Center for Tropical Medicine, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia Correspondence Anggi Lukman Wicaksana, Department of Medical Surgical Nursing, Faculty of Medicine, Public Health, and Nursing, Universitas Gadjah Mada, Gd. Ismangoen 2F Jl. Farmako, Sekip Utara Kompleks FK-KMK UGM, Yogyakarta 55281, Indonesia. Email: anggi.l.wicaksana@ugm.ac.id Funding information Faculty of Medicine, Public Health, and Nursing Universitas Gadjah Mada, Grant/ Award Number: UPPM/220/M/05/04/05.17 Abstract Aim: The aim of this study is to examine psychometric properties of the Indonesian version of medical outcome survey short form 12 version 2 (SF12v2). Methods: A cross-sectional study was conducted in three primary healthcare units in Yogyakarta, Indonesia. Patients with cardiovascular diseases who were able to respond to questionnaires and provide their consent were invited. The validity test included face, content, discriminant, and construct validity. The internal consistency was used as the reliability indicator. Results: The item and subscale of content validity index were 0.97 and 0.83, respec- tively. The instrument had 100% for equivalence and clarity outcomes, whereas the readability outcome was 91.7%. More than 80% of participants agreed and consid- ered SF12v2 understandable. The correlations among physical and mental subscales were substantial, supporting discriminant validity. The Bartlett test of sphericity was significant with the Kaiser-Meyer-Olkin test of 0.74. The principal component analy- sis resulted in eight components, explaining 88.4% of total variance. α coefficients for subscale were ranging from.58 to.81, whereas the physical and mental compo- nent summaries were.77 and.67, respectively. Conclusions: The Indonesian version of SF12v2 indicated a reliable and valid instru- ment. The SF12v2, available in a Bahasa Indonesia version, is an applicable instru- ment to assess quality of life on patients with cardiovascular diseases. KEYWORDS cardiovascular diseases, Indonesia, nursing, psychometrics, quality of life, SF-12 SUMMARY STATEMENT What is already known about this topic? • Quality of life plays an important role to evaluate the disease out- comes for patients with cardiovascular diseases. • The translated version of the SF12v2 in Bahasa Indonesia is avail- able, but there is no evidence of validity and reliability of the instruments. What this paper adds? • This paper provides evidence of validity and reliability indicators for the Indonesian version of the SF12v2. • The cross-cultural adaptation process confirms that this is an unbi- ased and valid instrument. Received: 1 April 2019 Accepted: 9 November 2019 DOI: 10.1111/ijn.12804 Int J Nurs Pract. 2020;e12804. wileyonlinelibrary.com/journal/ijn © 2020 John Wiley & Sons Australia, Ltd 1 of 8 https://doi.org/10.1111/ijn.12804