Children's demographic characteristics, medicine type and ADR information.

1Age reported in year groups: 0–2; 3–5; 6–11; 12 years and over.
2Calculated using Lower Super Output Area (LSOA) 2007 ranked score data, whereby lower scores indicate greater deprivation (data for families outside England are not reported due to incompatibility between IMD scoring systems within UK).
3Severity scores were assessed using the Hartwig scale [84] where 1 = No change in treatment with suspected drug; 2 = Drug dosing or frequency changed, without antidote or treatment for exhibited symptoms; 3 = Required treatment, or drug administration discontinued; 4 = Resulted in patient transfer to higher level of care; 5 = Caused permanent harm to patient or significant haemodynamic instability; 6 = Directly or indirectly resulted in patient death.