•  
  •  
 

Abstract

Introduction. Rheumatoid Arthritis is a chronic disease requiring a long-term medication affecting quality of life. Short Form 12 is a generic questionnaire to assess patients quality of life and has been validated in England. This study was designed to test reliability and validity of Indonesian version of SF-12 questionnaire. Methods. Sixty-five patients with clinically diagnosed RA using ACR/EULAR criterion were interviewed using Short Form 36 and Short Form 12 questionnaire. Validity was assessed with construct validity and external validity, while reliability tested with internal consistency and test-retest method. Results. Short-Form 12 (Indonesian Version) did not proved having a good validity, as it have a poor correlation between RE and MH domain in SF-36 and SF-12. Indonesian version of SF-12 shown a poor internal consistency (Cronbach Alpha: 0.561- 0.754) but a good test and retest reliability ( intraclass correlation coefficient: 0.844-0.980, p <0,05) Conclusions. Indonesian version SF-12 is not reliable nor valid to evaluate quality of life in RA patients.

References

1. Shah A, Clair WS. In: Longo DL, Kasper DL, Jameson JL, Fauci AS, Hauser SL, Loscalzo J, editors. Harrison's principles of internal medicine. 19th ed. New York: McGraw Hill; 2015. p.2136-49 2. Perhimpunan Reumatologi Indonesia. Rekomendasi Perhimpunan Reumatologi Indonesia Untuk Diagnosis dan Pengelolaan Artritis Reumatoid. Jakarta: Perhimpunan Reumatologi Indonesia; 2014. p.1-18. 3. Salaffi F, Carotti M, Gasparini S, Intorcia M, Grassi W. The healthrelated quality of life in rheumatoid arthritis, ankylosing spondylitis, and psoriatic arthritis: a comparison with a selected sample of healthy people. Health Qual Life Outcomes. 2009;7:25. 4. Walter JG, Littlejohn OG. Measuring quality of life in rheumatoid conditions. Clin Rheumatol. 2007;26(5):671-3. 5. Van Vilstren M, Boot CRL, Knol DL, van Schaardenburg D, Voskuyl AE, Steenbeek R, et al. Productivity at work and quality of life in patients with rheumatoid arthritis. BMC Musculoskelet Disord.. 2015;16:107. 6. Whalley D, McKenna SP, de Jong Z, van der Heijde D. Quality of life in rheumatoid arthritis. Br J Rheumatol. 1997;36:884-8. 7. World Health Organization (WHO). Constitution of the World Health Organization. Geneva: World Health Organization; 2006. p.1-20. 8. Khanna D, Tsevat J. Health related quality of life: An introduction. Am J Manag Care. 2007; 13 : 218-23 9. U.S. Department of Health and Human Services. Foundation Health Measure Report: Health related quality of life and well-being [Internet]. Washington: U.S. Department of Health and Human Services; November 2010 [cited 2016 July 23]. 6 p. Available from: https://www.healthypeople.gov/2020/yopics-objectives/topic/ health-related-quality-of-life-well-being. 10. Valderas JM, Kotzeva A, Espallargues M, Guyatt G, Ferrans CE, Halyard MY, et al. The impact of measuring patient-reported outcomes in clinical practice: a systematic review of the literature. Qual Life Res. 2008;17(2):179-93. 11. McHorney CA. Health status assesment methods for adults: past acomplishments and future challenges. Annu Rev Public Health. 1999;20:309-35. 12. World Health Organization (WHO). WHOQOL: Measuring quality of life. Geneva: World Health Organization. 1997. p.3-10. 13. Lubeck DP. Health-related quality of life measurements and studies in rheumatoid arthritis. Am J Manag Care. 2002;8(9):811-20. 14. Tijhuis GJ, de Jong Z, Zwinderman AH, Zuijderduin WM, Jansen LM, Hazes JM , et al. The validity of the Rheumatoid Arthritis-Quality of Life (RAQoL) questionnaire. Rheumatology. 2001;40(10):1112-9. 15. Maruish ME. User’s manual for the SF-12v2 Health Survey 3rd ed. Lincoln: Quality Metric Incorporated; 2012. 16. Hurst NP, Ruta DA, Kind P. Comparison of the MOS Short Form 12 health status questionnaire with the SF36 in patients with rheumatoid arthritis. Br J Rheumatol. 1998;37(8):862-9. 17. Gandhi SK, Sakmon W, Conrad K. Psychometric evaluation of the 12-item short-form health survey (SF-12) in osteoarthritis and rheumatoid arthritis clinical trials. Clin Ther. 2001;23(7): 1080-98. 18. Kosinski M, Zhao SZ, Dedhiya S, Osterhaus JT, Ware JE Jr. Determining minimally important changes in generic and diseasespesific health-related quality of life questionnaires in clinical trials of rheumatoid arthritis. Arthritis Rheum. 2000;43(7):1478-87. 19. Marra CA, Woolcott JC, Kopec JA, Shojania K, Offer R, Brazier JE, et al. A comparison of gengeric, indirect utility measures and disease-spesific instrumens in rheumatoid arthritis. Soc Sci Med. 2005;60(7):1571-82. 20. Anyfanti P, Tryantafyllou A, Panagopoulos P. Triantafyllou G, Pyrpasopoulou A, Chatzimichailidou S, et al. Predictors of impaired of life in patients with rheumatic disease. Clin Rheumatol. 2016;35(7):1705-11. 21. Azwar S. Reliabilitas dan Validitas, edisi 4. Yogyakarta: Pustaka Pelajar; 2012. p.23-50 22. Kaplan RM, Saccuzzo DP. Psychological Testing: Principal, Application, and Issues. Ontario: Cengage Learning; 2012. P.133- 156 23. Trochim W, Donnelly JP. The Research Methods Knowledge Base. Boston: Cengage Learning; 2006. p.150-640. 24. Novitasari L, Perwitasari DA, Khoirunnisa SM. Validity of short form 36 (SF-36) Indonesian version on rheumatoid arthritis patients. Indonesian Journal of Medicine and Health. 2016;7(3):80-6. 25. Goodwin LD, Leech NL. Understanding correlation: factors that affect the size of r. J Exp Educ. 2006;74(3):251-66. 26. Anthoine E, Moret L, Regnault A, Sébille V, Hardouin JB. Sample size used to validate a scale: a review of publlications in newlydeveloped patient reported outcomes measures. Health Qual Life Outcomes. 2014;12:1-10 27. Montezari A, Vahdadinia M, Mousavi SJ, Omidvari S. The Iranian version of 12-item Short Form Health Survey (SF-12): factor structure, internal consistency and construct validity. BMC Public Health. 2009;9:341 28. Tavakol M, Dennick R. Making sense of Cronbach’s alpha. Int J Med Educ. 2011;2:53-5. 29. Yurdugul H. Minimum Sample Size for Cronbach’s Coefficient Alpha: A Monte Carlo Study. Hacettepe Univ J Educ. 2008;35:397-405. 30. Islam N, Khan IH, Ferdous N, Rasker JJ. Translation, Cultural Adaptation and Validation of The English “Short Form SF 12v2” into Bengali in Rheumatoid Arthritis Patients. Health Qual Life Outcomes.. 2017;15(1):109. 31. Ritchie SJ, Bates TC, Deary IJ. Is Education Associated with Improvements in General Cognitive Ability, or in Specific Skills? Dev Psychol. 2015;51(5):573-82. 32. Corbacho MI, Dapueto JJ. Assesing the Functional Status and Quality of Life of Patients with Rheumatoid Arthritis. Rev Bras Rheumatol. 2010;50(1):31-43.

Download

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.