Fig. 2

Bland-Altman Plot for CHAQ Questionnaire. Bland-Altman plot for CHAQ questionnaire (a = CHAQ Score, b = “How would you rate your child’s illness in the past week?”, c = “How much pain do you think your child has had because of his or her illness in the past week?”, d = “Considering all the ways that illness affects your child, rate how your child is doing”). E-forms were plotted against paper forms. The x-axis is the mean of the two scores entered by the patient on the e-form and the paper form and the y-axis shows the differences between the e-form score and paper form score.