TY - JOUR
T1 - The Relapsing Polychondritis Disease Activity Index
T2 - Development of a disease activity score for relapsing polychondritis
AU - Arnaud, Laurent
AU - Devilliers, Hervé
AU - Peng, Stanford L.
AU - Mathian, Alexis
AU - Costedoat-Chalumeau, Nathalie
AU - Buckner, Jane
AU - Dagna, Lorenzo
AU - Michet, Clement
AU - Sharma, Aman
AU - Cervera, Ricard
AU - Haroche, Julien
AU - Papo, Thomas
AU - D'Cruz, David
AU - Arlet, Philippe
AU - Zwerina, Jochen
AU - Belot, Alexandre
AU - Suzuki, Noboru
AU - Harle, Jean Robert
AU - Moots, Robert
AU - Jayne, David
AU - Hachulla, Eric
AU - Marie, Isabelle
AU - Tanaka, Toshio
AU - Lebovics, Robert
AU - Scott, David
AU - Kucharz, Eugene J.
AU - Birchall, Martin
AU - Kong, Kok Ooi
AU - Gorochov, Guy
AU - Amoura, Zahir
N1 - Funding Information:
This study was funded in part by Institut National de la Santé et de la Recherche Médicale (INSERM) , Société Française de Médecine Interne (SNFMI) , Fond d'étude et de recherche du corps médical des hôpitaux de Paris (FERCM) , Association Francophone contre la Polychondrite Chronique Atrophiante (AFPCA) and Fondation Arthritis-Courtin .
PY - 2012/12
Y1 - 2012/12
N2 - Objective: The rarity of relapsing polychondritis (RP) has hindered the development of standardized tools for clinical assessment. Here, we describe the development of a preliminary score for disease assessing activity in RP, the Relapsing Polychondritis Disease Activity Index (RPDAI). Methods: Twenty-seven RP experts participated in an international collaboration. Selection and definition of items for disease activity were established by consensus during a 4-round internet-based Delphi survey. Twenty-six experts assessed the Physician's Global Assessment (PGA) of disease activity on 43 test cases on a 0-100 scale, yielding a total of 1118 PGA ratings. The weight of each item was estimated by multivariate regression models with generalized estimating equation, using PGA as the dependent variable. Results: Experts decided in consensus that the RPDAI should consider the 28-day period before each RPDAI assessment. Inter-rater reliability assessed by the intra-class correlation coefficient for the 1118 PGA ratings was 0.51 (CI95%: 0.41-0.64). The final RPDAI score comprised 27 items with individual weights ranging from 1 to 24 and a maximum theoretical RPDAI score of 265. Correlation between the RPDAI scores calculated based on the weights derived from the final multivariate model, and the 1118 PGA ratings was good (r = 0.56, p < 0.0001). Conclusion: We have developed the first consensus scoring system to measure disease activity in relapsing polychondritis (see www.RPDAI.org for online scoring). This tool will be valuable for improving the care of patients with this rare disease.
AB - Objective: The rarity of relapsing polychondritis (RP) has hindered the development of standardized tools for clinical assessment. Here, we describe the development of a preliminary score for disease assessing activity in RP, the Relapsing Polychondritis Disease Activity Index (RPDAI). Methods: Twenty-seven RP experts participated in an international collaboration. Selection and definition of items for disease activity were established by consensus during a 4-round internet-based Delphi survey. Twenty-six experts assessed the Physician's Global Assessment (PGA) of disease activity on 43 test cases on a 0-100 scale, yielding a total of 1118 PGA ratings. The weight of each item was estimated by multivariate regression models with generalized estimating equation, using PGA as the dependent variable. Results: Experts decided in consensus that the RPDAI should consider the 28-day period before each RPDAI assessment. Inter-rater reliability assessed by the intra-class correlation coefficient for the 1118 PGA ratings was 0.51 (CI95%: 0.41-0.64). The final RPDAI score comprised 27 items with individual weights ranging from 1 to 24 and a maximum theoretical RPDAI score of 265. Correlation between the RPDAI scores calculated based on the weights derived from the final multivariate model, and the 1118 PGA ratings was good (r = 0.56, p < 0.0001). Conclusion: We have developed the first consensus scoring system to measure disease activity in relapsing polychondritis (see www.RPDAI.org for online scoring). This tool will be valuable for improving the care of patients with this rare disease.
KW - Disease activity index
KW - Health status indicators
KW - Outcome assessment
KW - Relapsing polychondritis
KW - Severity of illness index
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U2 - 10.1016/j.autrev.2012.06.005
DO - 10.1016/j.autrev.2012.06.005
M3 - Review article
C2 - 22771427
AN - SCOPUS:84870252822
SN - 1568-9972
VL - 12
SP - 204
EP - 209
JO - Autoimmunity Reviews
JF - Autoimmunity Reviews
IS - 2
ER -