Changes in mean Asthma Quality of Life Questionnaire score (A), Asthma Control Questionnaire score (B), FEV1 (C), and daily inhaled corticosteroid dose (D) during 1-year follow-up for the Internet and usual caregroups.The minimal important difference for the Asthma Quality of Life Questionnaire is 0.5, with higher scores indicating better quality of life. The minimal important difference for the Asthma Control Questionnaire is0.5, with lower scores indicating better asthma control. Plotted values are based on complete cases. Error bars indicate 95% CIs. P values are shown for between-group differences in change in scores at 12 months andare from linear mixed-effects models.