Common clinical disease activity indices in psoriatic arthritis patients with and without fibromyalgia.
| Indices | PsA, n = 60 | PsA and FM, n = 13, 17.8%* | p |
|---|---|---|---|
| CPDAI ± SD | 4.25 ± 3.14 | 9.23 ± 1.92 | < 0.001 |
| DAPSA ± SD | 12.82 ± 12.7 | 27.53 ± 19.23 | 0.003 |
| DAS28 ± SD | 2.49 ± 1.18 | 3.39 ± 0.93 | 0.027 |
| MDA (%) | 26 (43.3) | 0 | 0.003 |
| CRP median, mg/dl** | 0.6 (0–1.05) | 0.5 (0–0.8) | 0.65 |
| PASI median** | 2.1 (0.2–6.3) | 3 (0.8–8.6) | 0.22 |
| SJC median** | 1 (0–3) | 0 (0–3) | 0.4 |
| HAQ median** | 0.25 (0–1) | 1.75 (1.07–2.37) | < 0.001 |
| BASDAI ± SD | 2.87 ± 2.35 | 7.18 ± 1.73 | < 0.001 |
| LEI median** | 0 (0–1) | 3 (2–4) | < 0.001 |
↵* The overall prevalence of FM among PsA patients in our study.
↵** 25th to 75th percentiles. PsA: psoriatic arthritis; FM: fibromyalgia; SJC: swollen joint count; CPDAI: Composite Psoriatic Disease Activity Index; MDA: minimal disease activity; DAPSA: Disease Activity Index for Psoriatic Arthritis; DAS28: 28-joint Disease Activity Score; CRP: C-reactive protein; PASI: Psoriasis Activity and Severity Index; HAQ: Health Assessment Questionnaire; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; LEI: Leeds Enthesitis Index.