The aim of this study is to investigate whether adding tailored mobile coaching system to present community primary care for diabetes management would result in better glycemic control and other diabetes-related outcomes in adult patients with type 2 diabetes, compared with maintaining usual diabetes management only.

The incidence and prevalence of type 2 diabetes is increasing rapidly worldwide. Considering the fact that complications of diabetes result in greater expenditure and reduced productivity is a socioeconomic concern, adequate glycemic control is important not only as individual health problem but also as challenge to healthcare systems worldwide. To support patients' behavior change efforts, including healthy lifestyle choices, disease self-management, and prevention of diabetes complication, multifaceted professional interventions are needed. Ubiquitous healthcare based on information and communication technology is one of these approaches.

The aim of this study is to investigate whether adding tailored mobile coaching system to present community primary care for diabetes management would result in better glycemic control and other diabetes-related outcomes in adult patients with type 2 diabetes, compared with maintaining usual diabetes management only.

Inclusion Criteria:

• Korean policyholders with type 2 diabetes;
• Aged ≥ 19 years;
• Smartphone users;
• Glycated hemoglobin (HbA1c) ≥ 6.5% within 3 months.

Exclusion Criteria:

• Currently had serious concomitant disease other than diabetes;
• Had admission histories due to malignancy, myocardial infarction, cerebral infarction, or organ transplantation;
• Pregnant or had plan for pregnancy within 6 months;
• Planned for attending other clinical;
• Illiteracy.

It was open label study.