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Skeletal Radiology
Erschienen in:

07.12.2018 | Scientific Article

Preliminary validation of the Simplified Psoriatic Arthritis Radiographic Score (SPARS)

verfasst von: Fausto Salaffi, Marina Carotti, Eleonora Di Donato, Marco Di Carlo, Michele Maria Luchetti, Luca Ceccarelli, Andrea Giovagnoni

Erschienen in: Skeletal Radiology | Ausgabe 7/2019

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Abstract

Objective

To develop and validate in a preliminary way a novel radiographic scoring system for psoriatic arthritis (PsA), called Simplified Psoriatic Arthritis Radiographic Score (SPARS).

Materials and methods

Radiographs of hands and feet were obtained from consecutive PsA patients and assessed by two readers. For each joint (30 joints in the hands, ten joints in the feet), the combination of the erosions, joint narrowing space (JNS) and bony proliferation (BP) has been assessed, giving a value of 1 for erosions presence, 1 for JNS presence, and 1 for BP presence (SPARS score range, 0–120). Reliability was assessed by calculating the intraclass correlation coefficient (ICC) and smallest detectable difference (SDD) of the readings. To determine the convergent validity, SPARS was compared to the modified Sharp/van der Heijde Score (mSvdHS) and to the Ratingen scoring system (PARS).

Results

One-hundred and five hands and feet radiographs have been assessed. The inter- and intra-rater reliability were excellent (inter-rater reliability 0.934, and intra-rater reliability for both readers 0.845 and 0.876). The SDD for the average SPARS scores of the two readers was 8.0. SPARS correlated strongly with mSvdHS (r = 0.926; p < 0.0001), and PARS (r = 0.904; p < 0.0001). The mean time to score each of the mSvdHS, PARS, and SPARS was 14.4, 10.1, and 4.5 min, respectively.

Conclusions

The SPARS properties are close to those of the mSvdHS and PARS and is quicker to calculate.
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Metadaten
Titel
Preliminary validation of the Simplified Psoriatic Arthritis Radiographic Score (SPARS)
verfasst von
Fausto Salaffi
Marina Carotti
Eleonora Di Donato
Marco Di Carlo
Michele Maria Luchetti
Luca Ceccarelli
Andrea Giovagnoni
Publikationsdatum
07.12.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Skeletal Radiology / Ausgabe 7/2019
Print ISSN: 0364-2348
Elektronische ISSN: 1432-2161
DOI
https://doi.org/10.1007/s00256-018-3124-0

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