Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Randomized, Controlled, Open-label Study to Evaluate the Efficacy of Smartphone Application in Patients With Type 2 Diabetes
Brief Summary: Since diabetes is a chronic disease closely related to unhealthy lifestyle, the improvement and management of living habits are as significant as medical care with regard to the disease. In addition, this is regarded as the most effective method for prevention and treatment of diabetes. However, many diabetic patients are now reported to lack proper management in Korea with a low level of compliance with treatment instruction. In that sense, it is urgently necessary to develop a program in which diabetic patients are able to effectively manage their own blood glucose at home, and to grasp the real state of self-blood glucose measurement. Accordingly, a system to manage diabetes using electronic equipment such as mobile phone or the Internet is currently being developed and studied, for the effective management of diabetes with the help of highly evolving information technology. These investigators have developed a diabetes management program that provides an optimal solution based on a mobile device and software, so that individual patients can undergo a regular blood glucose test and achieve improvement and constant management of living habits by being properly informed of how to manage diabetes. This clinical study was designed to evaluate the effectiveness and efficacy of the application through the comparison between usual medical care and additional care using the smartphone application, targeting patients with type 2 diabetes who lack blood glucose control. This study is targeted at the subjects who are being treated at this hospital's endocrinology, are using a smartphone, and voluntarily signed the informed consent form (ICF). The subjects who pass the subject eligibility evaluation provide information regarding assessment items and demographic information using the smartphone application and questionnaire. Based on the information given by subjects, the medical team offers a management system that supports and improves the existing treatment process of diabetes using the application developed on its own. The feasibility and effectiveness of the management using the application are evaluated through the result values of the laboratory tests performed during the subject's usual medical care.


Options:
A: Inclusion Criteria:

* All patients, who are enrolled in Patient Gateway, of physicians and practices participating in the study.

Exclusion Criteria:

* Any patients who are not enrolled in Patient Gateway or do not belong to a participating practice.
B: Inclusion Criteria:

* aged ≥ 19 years;
* android smartphone users;
* no changes in medication for diabetes for at least 6 months;
* HbA1c levels ≥6.5% within the last 3 months.

Exclusion Criteria:

* currently had serious concomitant disease other than diabetes (n=1); malignancy-related histories on admission, myocardial infarction, cerebral infarction or organ transplantation;
* pregnant or had plans for pregnancy within 6 months;
* plans to participate in other clinical studies or illiteracy.
C: Inclusion Criteria:

Screening study: Every one aged 40-69 years (UK and DK) or 50-69 years(NL). Treatment study: All with screen detected type 2 diabetes.

Exclusion Criteria:

Participants are excluded if they already have diabetes at time of screening, are pregnant or lactating or have a severe psychotic illness, are house bound or have an illness with a likely survival of less than one year.
D: Inclusion Criteria:

* Age 70 years and older
* Diagnosis of type 1 or type 2 diabetes
* Seen at Joslin Clinic or Beth Israel Deaconess Medical Center for at least one year
* HbA1c 8% X 2 in past 6 months without fluctuation of more than 0.5% (i.e. stable poor control)
* No major change in medications in past 3 months, e.g. addition of insulin or another hypoglycemic agent

Exclusion Criteria:

* Patients with terminal diseases, e.g. malignancy with expected life expectancy of 12 months or less
* Patients who live more than 25 miles from Joslin Clinic/Beth Israel Deaconess Medical Center
* Patients who live in an institutional setting (e.g. nursing home, group home, etc)
* Patients who are not able to complete outcome assessments, (e.g. poor vision, diminished mental capacity/severe cognitive decline, unable to speak/read/write English

Answer: B