Table 3

Serious adverse events, malignancies and death, including crude incidence rates, SIRs and SMRs, in all adults with JIA starting first TNFi therapy

All JIA
Total follow-up available, years4422
Mean (SD) follow-up per person, years10.0 (2.5)
Total exposure time on TNFi, years2799
Mean (SD) exposure time on TNFi per person, years6.4 (3.4)
Serious infections58
 Rate (95% CI)/1000 pyrs22.3 (17.2 to 28.8)
Serious cardiovascular events4
 Rate (95% CI)/1000 pyrs1.4 (0.5 to 3.8)
Uveitis11
 Rate (95% CI)/1000 pyrs4.0 (2.2 to 7.3)
Malignancies16
 Rate (95% CI)/1000 pyrs3.7 (2.3 to 6.0)
 SIR1.4 (0.9 to 2.3)
Deaths21*
 Rate (95% CI)/1000 pyrs5.0 (3.2 to 7.6)
 SMR2.5 (1.7 to 3.9)
  • Death certificates were available in 20 of 21 deaths. The underlying causes of death were as follows: infection (4), cardiovascular disease (5: ischaemic heart disease (2), aortic stenosis (1), dilated cardiomyopathy (1), hypertensive encephalopathy (1)); end stage renal disease (1); peptic ulcer disease (1); lung cancer (1); underlying rheumatic disease (8: JIA (1); RA (5); PsA (1), AS (1)).

  • AS, ankylosing spondylitis; JIA, juvenile idiopathic arthritis; PsA, psoriatic arthritis; pyrs, person-years; RA, rheumatoid arthritis; SIR, standardised incidence ratio; SMR, standardised mortality ratio; TNFi, tumour necrosis factor inhibitor.