Selected clinical and demographic data of the patients with and without condylar erosions
| Condylar erosions | P | ||||
| Present n=12 | Absent n=53 | ||||
| Age, mean, years (SD) | 29.5 (10) | 33 (10) | 0.3 | ||
| Gender | |||||
| Male | 8 (67) | 39 (74) | 0.7 | ||
| Female | 4 (33) | 14 (26) | |||
| Disease duration, mean years (SD) | 12 (7) | 7 (7) | 0.03 | ||
| Dougados functional index, mean (SD) | 10.5 (7) | 12 ( 9) | 0.5 | ||
| Peripheral arthritis, n (%) | 11 (92) | 38 (72) | 0.2 | ||
| Neck complains ever, n (%) | 9 (75) | 44 (83) | 0.5 | ||
| Neck complains as presenting symptom | 5 (42) | 8 (15) | 0.03 | ||
| Number of TMJ symptoms, mean (SD) | 1 (1) | 1 (1) | 0.6 | ||
| Patients with TMJ symptoms, n (%) | 7 (58) | 25 (47) | 0.4 | ||
| Occiput-wall distance mean 3-150(SD) | 0.5 (1.7) | 1.1 (3.4) | 0.5 | ||
| Modified Schober, mean 3-150 (SD) | 5.6 (2) | 5.7 (2) | 0.8 | ||
| HLA-B27+ | 11 (100) | 44 (83) | 0.3 | ||
| Atlantoaxial subluxation, n (%) | 5 (42) | 7 (13) | 0.03 | ||
| Anterior altantoaxial distance, mean 3-150(SD) | 3.5 (2) | 2.3 (1.1) | 0.006 | ||
TMJ, temporomandibular joint.
↵3-150 Measurement in centimetres.