Universität zu Köln

Horneff, Gerd and Becker, Ingrid ORCID: 0000-0001-5829-3553 (2014). Definition of improvement in juvenile idiopathic arthritis using the Juvenile Arthritis Disease Activity Score. RHEUMATOLOGY, 53 (7). S. 1229 - 1235. OXFORD: OXFORD UNIV PRESS. ISSN 1462-0332

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Abstract

Methods. Physicians' and parents' judgements on treatment efficacy, the ACR paediatric response measure (PedACR) and JADAS were extracted from BIKER. Patients were categorized by baseline classes in the 10-joint JADAS (JADAS10) as low (5 to < 15), moderate (15 to < 25) and high (25 to a parts per thousand currency sign40). Cut-offs for defining improvement following treatment with biologics or MTX were chosen by calculating the interquartile ranges (IQRs) of the judgement groups and considering the accuracy, sensitivity and specificity of the resulting model. Differences in the change of JADAS10 by JIA category were also analysed by analysis of variance (ANOVA). Sensitivity, specificity and accuracy were calculated. Results. A total of 1315 treatment courses were analysed. The ANOVA of the JIA categories showed no significant differences of the mean JADAS10 in all baseline classes and IQRs also showed good overall limits. Therefore all JIA categories were combined for a collective cut-off. Analysis by baseline class revealed clear cut-off points. Improvement could be defined by the minimal decrease in the JADAS10 in baseline class low by 4 (41%), moderate by 10 (53%) and high by 17 (57%). The model shows values for accuracy from 75.6 to 85.5% and comparable values for sensitivity and specificity. Conclusion. Improvement after 3 months can be defined efficiently by the decrease of the JADAS10, depending on the baseline JADAS10 score, which specifies low, moderate or high disease activity. Our model demonstrates clear cut-off values. The JADAS10 may be used in addition to ACR criteria in clinical trials. Also, since the JADAS10 can easily be calculated at each patient visit, it also can be used for clinical decisions.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Horneff, Gerd UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, Ingrid UNSPECIFIED orcid.org/0000-0001-5829-3553 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-435471
DOI:	10.1093/rheumatology/ket470
Journal or Publication Title:	RHEUMATOLOGY
Volume:	53
Number:	7
Page Range:	S. 1229 - 1235
Date:	2014
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1462-0332
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SELECT CATEGORIES; ETANERCEPT; CRITERIA; VALIDATION; REMISSION; REGISTRY; ABILITY; SAFETY Multiple languages Rheumatology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43547