Smartphone App as Motivational Intervention to Improve Glycemic Control in Adolescents with Type 1 Diabetes

Type 1 diabetes (T1D) adolescents often do not achieve good glycemic control. In the context of growing number of technologically savvy adolescents, this study was done to examine the effectiveness of a motivational smartphone app to improve their glycemic control.

Eleven to eighteen year old adolescents, treated by Pediatric endocrine team of CMC, Vellore, who had T1D ≥ 1 y duration with poor glycemic control (mean HbA1c ≥ 8.5% in preceding 12 mo) were recruited. An app programmed to provide 3 reminders per day regarding insulin, meals and physical exercise was installed on their phone. Diabetes management was continued as per the standard of care. HbA1C was measured after 3 mo.

Thirty seven adolescents were recruited; 3 were excluded as the app became non-functional. Seventeen were boys, mean age was 13.8 y (11-18 y) and mean duration of diabetes was 4.9 y (0.8-16 y). The mean HbA1c levels over preceding 12 mo and at recruitment were 10.75% (1.88) and 10.6% (2.08) respectively. Twenty eight participants returned for repeat HbA1C after 3-4 mo. As compared to baseline there was significant reduction in HbA1c level: 10.6% (2.08) vs. 9.65% (1.6); p = 0.004. Twenty two of twenty eight participants showed reduction in HbA1c after app installation. The magnitude of change in HbA1c levels over a 3 mo period before and after the app use was analyzed. There was significant difference between mean HbA1c levels before and after app use; +0.28 (2.06) vs. -0.914 (1.52); p = 0.019.

Following usage of smartphone app as a motivational intervention in adolescents with Type 1 diabetes, there was significant reduction in HbA1c level after 3 mo. With continued use, this may benefit them to achieve target HbA1c levels. Use of mobile phone apps as motivational interventions is feasible in adolescents with Type 1 diabetes in India.