A mobile phone short message service improves perceived control of asthma: a randomized controlled trial.

OBJECTIVE Mobile phone short message service (SMS) has been suggested as a potentially powerful tool to improve asthma outcomes, and it can overcome external barriers such as time and distance to participate education programs. We wanted to know whether SMS can help to overcome intrinsic barriers such as perceived control of asthma (PCA). SUBJECTS AND METHODS One hundred fifty outpatients with asthma were randomly assigned to the control, traditional, and SMS groups. Patients in all groups received verbal education based on the Global Initiative for Asthma, and patients in the traditional group received additional individualized asthma action plan for self-management with peak expiratory flow monitoring and recording asthma diary, while patients in the SMS group received additional daily SMS reminders on their mobile phone. The six-item PCA Questionnaire (PCAQ-6), Standard Asthma-Specific Quality of Life [AQLQ(S)], spirometry, blood and induced sputum cell count, follow-up compliance rate, medicine compliance rate, and emergency department (ED) visits data were collected at the initial visit and at 12 weeks. RESULTS In total, 71 participants completed the trial for analysis. Patients' PCAQ-6 score was significantly increased in the SMS and traditional groups (p<0.001) after 12 weeks, and the change of patients' PCAQ-6 score in the SMS group was higher than in the traditional group (p=0.018). Patients in the SMS group had the highest AQLQ(S) score and follow-up rate after 12 weeks. The change in PCAQ-6 score was associated with change in AQLQ(S) score (r=0.442). Patients in all groups had better forced expiratory volume in 1 s (FEV1%) and fewer ED visits after 12 weeks, but no significant differences were found among the three groups in the changes of FEV1% and blood and induced sputum eosinophil counts and neutrophil counts. CONCLUSIONS SMS can improve PCA, and it has a greater advantage in improving follow-up rate and asthma-specific quality of life than traditional programs.

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