Table 3

Drug survival at one, two, and three years by diagnosis

Drug survival [95% confidence interval]

Diagnosis

One year

Two years

Three years

Rheumatoid arthritis

0.83 [0.81–0.84]

0.72 [0.71–0.74]

0.65 [0.63–0.67]

All spondylarthritis

0.88 [0.86–0.90]*

0.82 [0.79–0.84]*

0.74 [0.71–0.78]*

Ankylosing spondylitis

0.88 [0.85–0.91]

0.82 [0.78–0.86]

0.76 [0.70–0.80]

Psoriatic arthritis

0.88 [0.84–0.90]

0.81 [0.77–0.84]

0.73 [0.67–0.78]

Undifferentiated spondylarthritis

0.88 [0.81–0.91]

0.83 [0.76–0.88]

0.72 [0.60–0.80]

Crohn's related spondylarthritis

0.90 [0.79–0.95]

0.86 [0.73–0.93]

0.82 [0.69–0.91]

Other spondylarthritis

0.79 [0.53–0.92]

0.61 [0.31–0.81]

0.61 [0.31–0.81]

*p of the difference versus survival at the same time in rheumatoid arthritis < 0.001 (by log-rank test).

Carmona et al. Arthritis Research & Therapy 2006 8:R72   doi:10.1186/ar1941