Table 2.
Characteristics of seronegative rheumatoid arthritis (RA) patients with radiographic progression during follow-up period (total number of patients = 43).
| Characteristics | Number (%) |
|---|---|
| SvdH score, mean ± SD | 47.1 ± 43.7 |
| Change of SvdH score/year, mean ± SD | 5.53 ± 8.7 |
| Joint space narrowing only | 14 (32.6) |
| Joint erosion + joint space narrowing | 29 (67.4) |
| Distribution of radiographic damage | |
| Small joints only | 13 (30.2) |
| Hand 1 joints only | 4 (9.3) |
| Foot 2 joints only | 0 (0) |
| Hand + foot joints | 9 (20.9) |
| Small + large 3 joints | 30 (69.8) |
| Hand and/or foot + large joints | 30 (69.8) |
| Numbers of involvement with radiographic damage | |
| One joint | 4 (9.3) |
| Multiple joints | 39 (91.7) |
Except where indicated otherwise, values are the number (%) of variables. SvdH, the Sharp van der Heijde. 1 Hand joint included proximal interphalangeal (PIP), metacarpophalangeal (MCP), 1st interphalangeal (IP) joints of hands and wrist joints. 2 Foot joint included metatarsophalangeal and 1st IP joints of feet. 3 Large joint included elbow, ankle, knee, hip, and shoulder joints.