1995
DOI: 10.1002/art.1780380602
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American college of rheumatology preliminary definition of improvement in rheumatoid arthritis

Abstract: Objective. Trials of rheumatoid arthritis (RA) treatments report the average response in multiple outcome measures for treated patients. It is more clinically relevant to test whether individual patients improve with treatment, and this identifies a single primary efficacy measure. Multiple definitions of improvement are currently in use in different trials. The goal of this study was to promulgate a single definition for use in RA trials. Methods. Using the American College of Rheumatology (ACR) core set of o… Show more

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Cited by 2,376 publications
(1,498 citation statements)
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References 13 publications
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“…However, no effects were found for TJC ( P = 0.60; MD = 1.26; 95% CI: −3.52 to 6.05), SJC ( P = 0.72; MD = −0.37; 95% CI: −2.35 to 1.61), DMS ( P = 0.94; MD = −2.50 min; 95% CI: −67.08 to 62.08), RF ( P = 0.79; SMD = 0.11; 95% CI: −0.70 to 0.92), ESR ( P = 0.54; MD = 5.28 mm/H; 95% CI: −11.62 to 22.17), or CRP ( P = 0.73; SMD = −0.22; 95% CI: −1.47 to 1.03). Only one trial [36] described the results, which were a 20% improvement in RA as defined by ACR (ACR 20) [39], ACR 50, and ACR 70, so we did not pool these results.…”
Section: Resultsmentioning
confidence: 99%
“…However, no effects were found for TJC ( P = 0.60; MD = 1.26; 95% CI: −3.52 to 6.05), SJC ( P = 0.72; MD = −0.37; 95% CI: −2.35 to 1.61), DMS ( P = 0.94; MD = −2.50 min; 95% CI: −67.08 to 62.08), RF ( P = 0.79; SMD = 0.11; 95% CI: −0.70 to 0.92), ESR ( P = 0.54; MD = 5.28 mm/H; 95% CI: −11.62 to 22.17), or CRP ( P = 0.73; SMD = −0.22; 95% CI: −1.47 to 1.03). Only one trial [36] described the results, which were a 20% improvement in RA as defined by ACR (ACR 20) [39], ACR 50, and ACR 70, so we did not pool these results.…”
Section: Resultsmentioning
confidence: 99%
“…The primary end point assessment was a noninferiority comparison of baricitinib monotherapy to MTX monotherapy based on the proportion of patients meeting the American College of Rheumatology 20% improvement criteria (achieving an ACR20 response) 11 at week 24. Major secondary end points assessed at week 24 included superiority comparisons of baricitinib monotherapy or baricitinib plus MTX to MTX monotherapy based on the ACR20 response, Health Assessment Questionnaire disability index (HAQ DI) 12, 13, Simplified Disease Activity Index (SDAI) remission (score of ≤3.3) 14, Disease Activity Score in 28 joints 15 based on C‐reactive protein level (DAS28‐CRP) 16, and modified Sharp/van der Heijde score (SHS) 17.…”
Section: Methodsmentioning
confidence: 99%
“…The primary efficacy end point was a ≥20% improvement in disease activity based on the American College of Rheumatology improvement response criteria (ACR20) 36 compared to placebo at week 12. A secondary end point was to compare the ACR20 response rates between ABT‐122 and adalimumab at week 12, although the study was not powered for these comparisons.…”
Section: Methodsmentioning
confidence: 99%