Patient demographics and accounting
| Peripheral arthritis | ||
|---|---|---|
| Yes (n = 155) | No (n = 232) | |
| *Limitation of motion of the lumbar spine in both the sagittal and frontal planes; †limitation of chest expansion relative to normal values corrected for age and sex. | ||
| Men, No (%) | 115 (74) | 186 (80) |
| Age (years), mean (SD) | 43.8 (13.9) | 43.5 (10.4) |
| Age (years), range | 18–78 | 21–74 |
| Low back pain at rest, No (%) | 152 (98) | 229 (99) |
| Limitation of lumbar spine*, No (%) | 140 (90) | 195 (84) |
| Limitation of chest expansion†, No (%) | 103 (66) | 152 (66) |
| Radiographic grade IV, No (%) | 53 (34) | 91 (39) |
| Prior DMARD use, No (%) | 77 (50) | 81 (35) |
| Prior corticosteroid use, No (%) | 54 (35) | 44 (19) |
| Concomitant DMARD use, No (%) | 49 (32) | 37 (16) |