68 Chapter 3 −6 −3 0 3 6 z score AST number of tests 0 10000 20000 Supplementary Figure 6: Z-scores for the difference in SD for the rate of elevated (>200 U/L) AST in the period of interest (cases presenting with non A-E hepatitis) and the control period (pre-2020), for 3-week to 5-year-olds.
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