Figure 2From: Switching TNF antagonists in patients with chronic arthritis: an observational study of 488 patients over a four-year periodSurvival of the second tumor necrosis factor (TNF) antagonist depending on the reason of replacement of first treatment. The numbers under the curves represent the patients known to be still on treatment by the end of the interval. Differences in the number between intervals do not mean that patients failed (stopped TNF antagonist). They actually represent the patients known to be still on treatment as of the time marked. AE, adverse effect.Back to article page