Examining unidimensionality and improving reliability for the eight subscales of the SF-36 in opioid-dependent patients using Rasch analysis

Hsiao, Yu‐Yu; Shih, Ching-Lin; Yu, Wan-Hui; Hsieh, Cheng-Hsi; Hsieh, Ching-Lin

doi:10.1007/s11136-014-0771-z

Cited by 10 publications

(15 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…29-31 Lu et al found that the ODI is a unidimentional instrument in a heterogeneous population of patients with back pain. 29 The outfit statistics of 0.55 to 1.26 presented in that study are similar to the performance of the ODI in our population.…”

Section: Discussionmentioning

confidence: 99%

PROMIS PF CAT Outperforms the ODI and SF-36 Physical Function Domain in Spine Patients

Brodke

Goz

Voss

et al. 2017

Spine

134

View full text Add to dashboard Cite

Study Design The Oswestry Disability Index v2.0 (ODI), SF36 Physical Function Domain (SF-36 PFD) and PROMIS Physical Function CAT v1.2 (PF CAT) questionnaires were prospectively collected from 1,607 patients complaining of back or leg pain, visiting a university-based spine clinic. All questionnaires were collected electronically, using a tablet computer. Objective To compare the psychometric properties of the PROMIS PF CAT to the ODI and SF36 Physical Function Domain in the same patient population. Summary of Background Data Evidence-based decision-making is improved by using high quality patient reported outcomes measures. Prior studies have revealed the shortcomings of the ODI and SF36, commonly used in spine patients. The PROMIS Network has developed measures with excellent psychometric properties. The Physical Function domain, delivered by Computerized Adaptive Testing (PF CAT), performs well in the spine patient population, though to-date direct comparisons with common measures have not been performed. Methods Standard Rasch analysis was performed to directly compare the psychometrics of the PF CAT, ODI, and SF36 PFD. Spearman correlations were computed to examine the correlations of the three instruments. Time required for administration was also recorded. Results 1,607 patients were administered all assessments. The time required to answer all items in the PF CAT, ODI and SF-36 PFD was 44, 169, and 99 seconds. The ceiling and floor effects were excellent for the PF CAT (0.81%, 3.86%), while the ceiling effects were marginal and floor effects quite poor for the ODI (6.91% and 44.24%) and SF-36 PFD (5.97% and 23.65%). All instruments significantly correlated with each other. Conclusions The PROMIS PF CAT outperforms the ODI and SF-36 PFD in the spine patient population and is highly correlated. It has better coverage, while taking less time to administer with fewer questions to answer.

show abstract

Section: Discussionmentioning

confidence: 99%

PROMIS PF CAT Outperforms the ODI and SF-36 Physical Function Domain in Spine Patients

Brodke

Goz

Voss

et al. 2017

Spine

134

View full text Add to dashboard Cite

show abstract

“…However, in terms of the step parameter, step disorders were observed in 19 out of 34 items. This might be a result of the small sample size, and in fact, a sample size larger than 250 was suggested to ensure an adequate and stable estimation of parameters for Rasch analysis [ 50 , 51 ]. Furthermore, this might be related to the relatively good HIV-related condition of the study participants, as evidenced by their CD4 cell counts and viral load status, as well as their scores on K-MOS-HIV.…”

Section: Discussionmentioning

confidence: 99%

Psychometric properties of the Korean version of the medical outcomes study HIV health survey: results from a multicenter survey in Korea

Shim

Lee

et al. 2018

Health Qual Life Outcomes

View full text Add to dashboard Cite

BackgroundPrecise assessment of health-related quality of life (HRQOL) with a reliable and valid measure is a prerequisite to the enhancement of HRQOL. This study examined the psychometric properties of the Korean version of the Medical Outcomes Study HIV Health Survey (K-MOS-HIV).MethodsThe reliability and validity of the K-MOS-HIV were examined in a multicenter survey involving 201 outpatients with human immunodeficiency virus (HIV)/ acquired immunodeficiency syndrome (AIDS) from four teaching hospitals throughout Korea.ResultsCeiling effects were observed in six subscales scores, particularly, for the role functioning (71.1%), social functioning (63.2%), and pain (48.8%) scores. The Cronbach’s α for the physical health summary and mental health summary were 0.90 and 0.94, respectively, and it ranged from 0.78 to 0.95 for the subscales. The results of the exploratory structural equation modeling supported the two-factor structure of the K-MOS-HIV (physical health summary and mental health summary). An examination of the mean square statistics values from the Rasch analysis showed that the information-weighted fit and outlier-sensitive fit statistics were within the acceptable ranges of 0.6–1.4 except for two items in the mental health summary. The convergent validity of the K-MOS-HIV was supported by its significant positive correlations with the World Health Organization Quality of Life-HIV-BREF subscale scores. Its known-group validity was proven with its ability to detect significant differences in several K-MOS-HIV subscale scores among participants with different sociodemographic and clinical characteristics.ConclusionsThe K-MOS-HIV health survey appears to be a reliable and valid measure of HRQOL.

show abstract

“…The SF-36 is now widely used for both research and clinical purposes and has undergone rigorous psychometric evaluation nationally and internationally using Classic Test Theory (CTT) [ 6 , 7 , 9 , 10 ]. CTT seeks to determine the reliability of a whole instrument through evaluating the degree of variance in terms of the ratio between true and observed scores.…”

Section: Introductionmentioning

confidence: 99%

“…IRT-based evaluation of the SF-36 has overwhelmingly focused on individual scales, particularly the Physical Functioning-10 subscale, with only some studies having examined particular psychometric properties of the SF-36 as a whole instrument or by component summary scores [ 5 , 6 , 12 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Longitudinal Item and Category Stability of the SF-36 Full and Summary Scales Using Rasch Analysis

Cordier

Brown

Clemson

et al. 2018

BioMed Research International

View full text Add to dashboard Cite

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 1921-1926 cohort of the Australian Longitudinal Study on Women's Health, responses of the SF-36 from six waves of data collection were analysed. Rasch analysis using Winsteps version 3.92.0 was performed on all 36 items of the SF-36 and items that constitute the physical health and mental health scales. Results Rasch analysis revealed issues with the SF-36 not detected using classical methods. Redundancy was seen for items on the total measure and both scales across all waves of data. Person separation indexes indicate that the measure lacks sensitivity to discriminate between high and low performances in this sample. The presence of Differential Item Functioning suggests that responses to items were influenced by locality and marital status. Conclusion Previous evaluations of the SF-36 have relied on cross-sectional data; however, the findings of the current study demonstrate the longitudinal efficacy of the measure. Application of the Rasch Measurement Model indicated issues with internal consistency, generalisability, and sensitivity when the measure was evaluated as a whole and as both physical and mental health summary scales. Implications for future research are discussed.

show abstract

Examining unidimensionality and improving reliability for the eight subscales of the SF-36 in opioid-dependent patients using Rasch analysis

Abstract: The remaining 32 items of the SF-36 are appropriate for evaluating the HRQOL in opioid-dependent patients in terms of unidimensionality. Additionally, the test scores produced by the multidimensional approach were more accurate than those obtained by the unidimensional approach.

Cited by 10 publications

References 31 publications

PROMIS PF CAT Outperforms the ODI and SF-36 Physical Function Domain in Spine Patients

PROMIS PF CAT Outperforms the ODI and SF-36 Physical Function Domain in Spine Patients

Psychometric properties of the Korean version of the medical outcomes study HIV health survey: results from a multicenter survey in Korea

Evaluating the Longitudinal Item and Category Stability of the SF-36 Full and Summary Scales Using Rasch Analysis

Contact Info

Product

Resources

About