Graphical presentation of the non-inferiority of subcutaneous vs intravenous hydration. Footnote: The solid vertical line represents the line of no difference between subcutaneous (SC) and intravenous (IV). The dashed vertical line represents our pre-specified non-inferiority margin. p-value for non-inferiority = 0.012. The risk ratio between subcutaneous and intravenous is RR 0.66 (95% CI 0.29–1.49) favouring subcutaneous hydration.