Research Article
Combining Calcitonin and Procalcitonin and Rheumatoid Arthritis-Related Biomarkers Improve Diagnostic Outcomes in Early Rheumatoid Arthritis
Table 1
Demographic and clinical characteristics of the participants.
| | Characteristic | Early RA | Established RA | Non-RA | Healthy controls | | SLE | OA | GA |
| | Total | 48 | 34 | 37 | 30 | 31 | 80 | | Age (years) | | | | | | | | Females (%) | 34 (70.8%) | 32 (94.1%) | 34 (91.9%) | 26 (86.7%) | 0 (0%) | 42 (52.5%) | | Disease duration (years) | 0.9 (0.6–1.0) | 6.0 (3.8–11.0) | — | — | — | — | | Tender joint count | 12 (4–17) | 10 (5–20) | — | — | — | — | | Swelling joint count | 3 (0–13) | 3 (1–10) | — | — | — | — | | CRP (mg/L) | 17.91 (5.81–45.51) | 23.40 (11.11–66.43) | — | — | — | — | | ESR (mm/h) | | | — | — | — | — | | Radiographic progression, median | | | | | | | | Joint-space narrowing score | 1 (1–1) | 1 (1–2) | — | — | — | — | | Erosion score | 1 (1–2) | 3 (2–4) | — | — | — | — |
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