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Comparison of annualised rate of Significant Inflammatory Events (All CIEs + MK) in ReCSS and the CLAY study 14 by age group. Horizontal lines show the 95% confidence interval. Sample sizes: CLAY Study 14 18–25 years N = 1129; 13–17 years N = 811; 8–12 N = 243, ReCSS Study 8–16 years N = 963.
