TY - JOUR
T1 - Defining criteria for high disease activity in juvenile idiopathic arthritis based on the Juvenile Arthritis Disease Activity Score
AU - Consolaro, Alessandro
AU - Ruperto, Nicolino
AU - Bracciolini, Giulia
AU - Frisina, Alessia
AU - Gallo, Maria Chiara
AU - Pistorio, Angela
AU - Verazza, Sara
AU - Negro, Giorgia
AU - Gerloni, Valeria
AU - Goldenstein-Schainberg, Claudia
AU - Sztajnbok, Flavio
AU - Wulffraat, Nico M.
AU - Martini, Alberto
AU - Ravelli, Angelo
PY - 2014
Y1 - 2014
N2 - Objective To determine cutoff values for defining the state of high disease activity (HDA) in juvenile idiopathic arthritis (JIA) using the Juvenile Arthritis Disease Activity Score (JADAS). Methods For the selection of cutoff values, data from a clinical database including 609 patients were used. Optimal cutoff values were determined against external criteria by calculating the 25th and 10th centile of cumulative score distribution and through receiver operating characteristic curve analysis. External criteria were based on the therapeutic decision made by the attending doctor. Cross-validation was performed using five patient samples that included 1421 patients. Results The optimal cutoff values were those obtained through the 90% fixed sensitivity method. The selected JADAS cutoff values were the following: 4.2 and 8.5 for JADAS27 in oligoarthritis and polyarthritis, respectively; 4.2 and 10.5 for both JADAS10 and JADAS71 in oligoarthritis and polyarthritis, respectively. In crossvalidation analyses, the cutoff values showed strong ability to discriminate between different levels of American College of Rheumatology paediatric response in two clinical trials and could predict worse functional and radiographic outcome. Conclusions Cutoff values for classifying HDA in JIA using the JADAS were developed. In cross-validation analyses, they proved to have good construct and discriminant validity and ability to predict disease outcome.
AB - Objective To determine cutoff values for defining the state of high disease activity (HDA) in juvenile idiopathic arthritis (JIA) using the Juvenile Arthritis Disease Activity Score (JADAS). Methods For the selection of cutoff values, data from a clinical database including 609 patients were used. Optimal cutoff values were determined against external criteria by calculating the 25th and 10th centile of cumulative score distribution and through receiver operating characteristic curve analysis. External criteria were based on the therapeutic decision made by the attending doctor. Cross-validation was performed using five patient samples that included 1421 patients. Results The optimal cutoff values were those obtained through the 90% fixed sensitivity method. The selected JADAS cutoff values were the following: 4.2 and 8.5 for JADAS27 in oligoarthritis and polyarthritis, respectively; 4.2 and 10.5 for both JADAS10 and JADAS71 in oligoarthritis and polyarthritis, respectively. In crossvalidation analyses, the cutoff values showed strong ability to discriminate between different levels of American College of Rheumatology paediatric response in two clinical trials and could predict worse functional and radiographic outcome. Conclusions Cutoff values for classifying HDA in JIA using the JADAS were developed. In cross-validation analyses, they proved to have good construct and discriminant validity and ability to predict disease outcome.
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U2 - 10.1136/annrheumdis-2013-204186
DO - 10.1136/annrheumdis-2013-204186
M3 - Article
C2 - 24347571
AN - SCOPUS:84902272012
VL - 73
SP - 1380
EP - 1383
JO - Annals of the Rheumatic Diseases
JF - Annals of the Rheumatic Diseases
SN - 0003-4967
IS - 7
ER -