Baseline characteristics of US negative and US positive patients (GS >1 and/or PD >0)
| US negative (n=28) | US positive (n=39) | |
|---|---|---|
| Women (%) | 66 | 69 |
| Age, years (mean, SD) | 52 (12) | 58 (12) |
| PD (%) | NA | 73 |
| Sum score GS >1 and/or PD>0 (median, IQR) | NA | 4 (2–8) |
| SJC (median, IQR) | 0 (0–0) | 0 (0–0) |
| TJC (median, IQR) | 0 (0–1) | 0 (0–1) |
| RF positive (%) | 56 | 56 |
| ACCP positive (%) | 74 | 60 |
| ESR (median, IQR) | 7 (4–15) | 9 (5–16) |
| DAS score (mean, SD) | 1.0 (0.6) | 1.2 (0.6) |
| Disease flare after 3 months (%) | 0 | 8 |
SD, standard deviation; IQR, interquartile range.