TY - JOUR
T1 - Psychometric validation of the SF-36® Health Survey in ulcerative colitis
T2 - results from a systematic literature review
AU - Yarlas, Aaron
AU - Bayliss, Martha
AU - Cappelleri, Joseph C.
AU - Maher, Stephen
AU - Bushmakin, Andrew G.
AU - Chen, Lea Ann
AU - Manuchehri, Alireza
AU - Healey, Paul
N1 - Funding Information:
Acknowledgements This research was funded by Pfizer Incorporated. The authors would like to thank Carla Hernandez for her support of the literature search.
Funding Information:
This study was funded by Pfizer Inc.
Publisher Copyright:
© 2017, Springer International Publishing AG.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Purpose: To conduct a systematic literature review of the reliability, construct validity, and responsiveness of the SF-36® Health Survey (SF-36) in patients with ulcerative colitis (UC). Methods: We performed a systematic search of electronic medical databases to identify published peer-reviewed studies which reported scores from the eight scales and/or two summary measures of the SF-36 collected from adult patients with UC. Study findings relevant to reliability, construct validity, and responsiveness were reviewed. Results: Data were extracted and summarized from 43 articles meeting inclusion criteria. Convergent validity was supported by findings that 83% (197/236) of correlations between SF-36 scales and measures of disease symptoms, disease activity, and functioning exceeded the prespecified threshold (r ≥ |0.40|). Known-groups validity was supported by findings of clinically meaningful differences in SF-36 scores between subgroups of patients when classified by disease activity (i.e., active versus inactive), symptom status, and comorbidity status. Responsiveness was supported by findings of clinically meaningful changes in SF-36 scores following treatment in non-comparative trials, and by meaningfully larger improvements in SF-36 scores in treatment arms relative to controls in randomized controlled trials. The sole study of SF-36 reliability found evidence supporting internal consistency (Cronbach’s α ≥ 0.70) for all SF-36 scales and test–retest reliability (intraclass correlation coefficient ≥0.70) for six of eight scales. Conclusions: Evidence from this systematic literature review indicates that the SF-36 is reliable, valid, and responsive when used with UC patients, supporting the inclusion of the SF-36 as an endpoint in clinical trials for this patient population.
AB - Purpose: To conduct a systematic literature review of the reliability, construct validity, and responsiveness of the SF-36® Health Survey (SF-36) in patients with ulcerative colitis (UC). Methods: We performed a systematic search of electronic medical databases to identify published peer-reviewed studies which reported scores from the eight scales and/or two summary measures of the SF-36 collected from adult patients with UC. Study findings relevant to reliability, construct validity, and responsiveness were reviewed. Results: Data were extracted and summarized from 43 articles meeting inclusion criteria. Convergent validity was supported by findings that 83% (197/236) of correlations between SF-36 scales and measures of disease symptoms, disease activity, and functioning exceeded the prespecified threshold (r ≥ |0.40|). Known-groups validity was supported by findings of clinically meaningful differences in SF-36 scores between subgroups of patients when classified by disease activity (i.e., active versus inactive), symptom status, and comorbidity status. Responsiveness was supported by findings of clinically meaningful changes in SF-36 scores following treatment in non-comparative trials, and by meaningfully larger improvements in SF-36 scores in treatment arms relative to controls in randomized controlled trials. The sole study of SF-36 reliability found evidence supporting internal consistency (Cronbach’s α ≥ 0.70) for all SF-36 scales and test–retest reliability (intraclass correlation coefficient ≥0.70) for six of eight scales. Conclusions: Evidence from this systematic literature review indicates that the SF-36 is reliable, valid, and responsive when used with UC patients, supporting the inclusion of the SF-36 as an endpoint in clinical trials for this patient population.
KW - Psychometric validation
KW - SF-36
KW - Systematic review
KW - Ulcerative colitis
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U2 - 10.1007/s11136-017-1690-6
DO - 10.1007/s11136-017-1690-6
M3 - Review article
C2 - 28849311
AN - SCOPUS:85028525513
SN - 0962-9343
VL - 27
SP - 273
EP - 290
JO - Quality of Life Research
JF - Quality of Life Research
IS - 2
ER -