2018
DOI: 10.1155/2018/1013453
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Evaluating the Longitudinal Item and Category Stability of the SF-36 Full and Summary Scales Using Rasch Analysis

Abstract: Introduction The Medical Outcome Study Short Form 36 (SF-36) is widely used for measuring Health-Related Quality of Life (HRQoL) and has undergone rigorous psychometric evaluation using Classic Test Theory (CTT). However, Item Response Theory-based evaluation of the SF-36 has been limited with an overwhelming focus on individual scales and cross-sectional data. Purpose This study aimed to examine the longitudinal item and category stability of the SF-36 using Rasch analysis. Method Using data from the 1921-192… Show more

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Cited by 22 publications
(8 citation statements)
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“…The SF-36 questionnaire used in this study is a standardized questionnaire that is now widely used for both research and clinical purposes, and it has undergone rigorous psychometric evaluation nationally and internationally using classical test theory (CTT) [16][17][18][19][20]. As a general questionnaire, it includes the following eight Fig.…”
Section: Discussionmentioning
confidence: 99%
“…The SF-36 questionnaire used in this study is a standardized questionnaire that is now widely used for both research and clinical purposes, and it has undergone rigorous psychometric evaluation nationally and internationally using classical test theory (CTT) [16][17][18][19][20]. As a general questionnaire, it includes the following eight Fig.…”
Section: Discussionmentioning
confidence: 99%
“…In designing a study to determine PSI validity, we found a lack of conceptually relevant tools against which to compare the PSI. Other PROMs like the PROMIS 26,27 , SF-36 28,,29 and the Medical Symptom Toxicity Questionnaire (MSQ) 30 are powerful assessment tools in their own right, but none were created to be digital-first in this new era of telehealth-centric care delivery. This gap in available PROMs drove us to create the PSI, and why we chose to validate it against the SRH.…”
Section: Discussionmentioning
confidence: 99%
“…The SF-36 questionnaire consists of 2 component concepts, namely the Physical Component Score and the Mental Component Score. 13 A bigger score indicates a better quality of life.…”
Section: Methodsmentioning
confidence: 99%