Characteristics of the patients at the follow up visit
| Lymecycline group (n=9) | Placebo group (n=8) | Total (n=17) | |
|---|---|---|---|
| *Number of patients. | |||
| Age | |||
| Mean (range) | 46.3 (30–63) | 42.4 (26–52) | 44.5 (26–63) |
| Female | 49.6 (30–63) | 50 | 49.7 (30–63) |
| Male | 42.3 (33–51) | 42.3 (26–52) | 41.6 (26–52) |
| During follow up | |||
| Low back pain | 8 (89%) | 8 (100%) | 16 (94%) |
| Joint symptoms | 4 (44%) | 6 (75%) | 10 (59%) |
| At follow up visit | |||
| Low back pain | 4 (44%) | 3 (38%) | 7 (42%) |
| Number of patients with tender joints | 3 (33%) | 3 (38%) | 6 (35%) |
| Number of tender joints median (range) | 0 (0–3) | 0 (0–5) | 0 (0–5) |
| Number of patients with swollen joints | 1 (11%) | 2 (25%) | 3 (18%) |
| Number of swollen joints median (range) | 0 (0–1) | 0 (0–2) | 0 (0–2) |
| Recurrent reactive arthritis | 2 | 0 | 2 |
| Recurrent iritis during follow up | 1 | 2 | 3 |
| Lumbosacral radiology | |||
| Inflammatory lesions* | 3 | 1 | 4 |
| Non-inflammatory changes* | 4 | 2 | 6 |