Vaccinations Do Not Increase Arthritis Flares in Juvenile Idiopathic Arthritis: A Study of the Relationship between Routine Childhood Vaccinations on the Australian Immunisation Schedule and Arthritis Activity in Children with Juvenile Idiopathic Arthritis

Table 2

Self-controlled case series analyses.

Analysis	RR (95% CI)	value	Patients ()	Arthritis flares ()
Primary analysis risk interval: 90 days	0.59 (95% CI 0.39-0.89)	0.012	138	32
Sensitivity analysis 1; RI: 90 days, excluding nonspecific flare dates	0.38 (95% CI 0.21-0.67)	0.009	122	16
Sensitivity analysis 2; RI: 42 days, excluding nonspecific flare dates	0.12 (95% CI 0.02-0.49)	0.003	122	2