期刊
ANNALS OF THE RHEUMATIC DISEASES
卷 69, 期 12, 页码 2160-2164出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/ard.2010.129726
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资金
- Krembil Foundation
- Arthritis Society SPARCC National Research Initiative
- Canadian Arthritis Network
- Abbott
- Canadian Institutes of Health Research - Clinical Research Initiative
Objective To assess the discriminative ability and correlation of the Ankylosing Spondylitis Disease Activity Score (ASDAS) and Bath Ankylosing Spondylitis Activity Disease Activity Index (BASDAI) with disease activity in axial psoriatic arthritis (AxPsA). Methods Patients with AxPsA were selected from a large prospective cohort study of psoriatic arthritis. Patient and physician global scores were used as constructs of disease activity. Patients were categorised into high and low disease activity states based on patient and physician global assessment scores and physician's decision to change treatment. Statistical analysis included descriptive statistics, linear and logistic regression. Results 201 patients with AxPsA were included in the study. ASDAS and BASDAI showed good correlation with disease activity as reflected by the patient global score (correlation coefficients (r) for BASDAI 0.84, ASDAS-B 0.77, ASDAS-C 0.81, p<0.001) and the physician global score (r=0.53 for BASDAI, r=0.50 for ASDAS-B, r=0.55 for ASDAS-C, p<0.001). Both scores showed good discriminative ability between high and low disease activity states. However, there were no significant differences between areas under the curve for the models that compared ASDAS with BASDAI for each definition of disease activity state. Conclusions In patients with AxPsA, ASDAS and BASDAI scores show similar good to moderate discriminative ability and correlation with different constructs of disease activity. ASDAS was not superior to BASDAI in its ability to discriminate between high and low disease activity states in AxPsA.
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