There was no significant difference in the proportion of dosing errors using the dosing cup compared with the dosing syringe (Figure 2A). Using cups, participants with below-average literacy (2B, left figure) were more likely than participants with above-average literacy (2C, left figure) to make any dosing error (p<0.001) and major dosing errors (p<0.001). With the syringe, participants with below-average literacy (2B, right figure) were more likely than participants with above-average literacy (2C, right figure) to make any dosing error (p<0.001) and major dosing errors (p<0.001).