期刊
ARTHRITIS CARE & RESEARCH
卷 67, 期 7, 页码 972-980出版社
WILEY
DOI: 10.1002/acr.22538
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资金
- Merck, Sharp and Dohme, Chibret Laboratories of France
- EMD Serono
- Novartis
- Bioiberica
- Iroko Laboratories
- Pfizer
- Ipsen
- Abbott International
- Amgen
- AstraZeneca
- UCB
- Janssen
- AbbVie
- Cooper Pharmaceuticals
- Roche
- Actelion
- Bristol-Myers Squibb
ObjectiveThe ability to interpret scores from patient-reported outcome measures at the individual patient level depends on the availability of valid, clinically meaningful benchmarks of response and state attainment. The goal was to develop multinational estimates for minimal clinically important improvement (MCII) and patient acceptable symptomatic state (PASS). MethodsA multinational sample of patients with osteoarthritis (OA) was evaluated before and 4 weeks after treatment with nonsteroidal antiinflammatory drugs. Patients completed either the Western Ontario and McMaster Osteoarthritis Index (WOMAC) numerical rating scale 3.1 (hip and knee OA) or the Australian/Canadian Index (AUSCAN) numerical rating scale 3.1 (hand OA) before and after treatment. Patients rated the clinical importance of their response to treatment and their satisfaction with the health state achieved, from which multinational MCII and PASS estimates were calculated for both the WOMAC and AUSCAN indices. ResultsA total of 609 patients from 7 countries participated in the study. MCII and PASS estimates varied slightly by instrument and subscale. Absolute (percentage) change for MCII ranged 6-9 (10% to 17%) for WOMAC and 4-9 (8% to 15%) for AUSCAN. PASS estimates ranged 39-48 for WOMAC and 38-45 for AUSCAN. Some between-country variation was observed in MCII and PASS. ConclusionPreliminary multinational estimates for MCII and PASS have been developed for several countries. Further research is required to evaluate the robustness, temporal consistency, and age- and sex-dependency of the preliminary estimates as well as their generalizability to other countries, languages, cultures, regions, and other condition-specific outcome measures.
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