Table 1.
Comparing PD-positive non-swollen and non-tender joints according to DAS28 categories.
| Joint Site a | DAS28 < 3.2 (Frequency b of PD Positivity Among Non-Swollen and Non-Tender Joints in %) |
DAS28 ≥ 3.2 (Frequency b of PD Positivity Among Non-Swollen and Non-Tender Joints in %) |
p-Value c | |
|---|---|---|---|---|
| Wrist | Right | n = 16 out of 26 (61.5%) | n = 18 out of 27 (66.7%) | 0.697 |
| Left | n = 20 out of 31 (64.5%) | n = 15 out of 26 (57.7%) | 0.598 | |
| MCPJ index finger | Right | n = 11 out of 30 (36.7%) | n = 10 out of 26 (38.5%) | 0.890 |
| Left | n = 14 out of 33 (42.4%) | n = 9 out of 30 (30.0%) | 0.306 | |
| MCPJ middle finger | Right | n = 10 out of 31 (32.3%) | n = 14 out of 35 (40.0%) | 0.514 |
| Left | n = 8 out of 33 (24.2%) | n = 14 out of 37 (37.8%) | 0.221 | |
| MCPJ ring finger | Right | n = 7 out of 34 (20.6%) | n = 11 out of 41 (26.8%) | 0.529 |
| Left | n = 7 out of 34 (20.6%) | n = 12 out of 40 (30.0%) | 0.356 | |
| MCPJ little finger | Right | n = 4 out of 35 (11.4%) | n = 9 out of 40 (22.5%) | 0.206 |
| Left | n = 8 out of 35 (22.9%) | n = 11 out of 43 (25.6%) | 0.780 | |
Abbreviations: DAS28, 28-joint disease activity score; PD, power Doppler; MCPJ, metacarpophalangeal joint. a The 5 joint sites most frequently harboring subclinical PD synovitis were selected for comparative analysis. b Only PD positivity at non-swollen, non-tender joints were included in the calculation. c Comparative analysis performed using Pearson’s chi-square test.