Table 2. Type 2 diabetes mellitus diagnosis-related studies: Included features for machine learning.
| Study | Demographic data | Laboratory test results | Vital signs | Life style | History | Others | 
|---|---|---|---|---|---|---|
| Pei et al. (2019) | Age, gender, BMI | Physical activity, work stress, salty food preference | History of cardiovascular disease or stroke, family history of diabetes, hypertension | |||
| Wu et al. (2018) | Age, BMI | 2-h plasma glucose, 2-h serum insulin, diabetes pedigree function | Diastolic blood pressure | Number of times pregnant | Triceps skin fold thickness | |
| Talaei-Khoei & Wilson (2018) | Age, sex, BMI | High density lipoprotein cholesterol, triglycerides, fast plasma glucose, Hemoglobin A1c | Systolic blood pressure | Shortness of breath, frequent urination at night, excessive thirst | History of high blood glucose, parental history of diabetes | Waist/hip ratio, waist circumference | 
| Upadhyaya et al. (2017) | Hemoglobin A1c | A prescription for metformin, DM-related medication | ICD-9-CM code | |||
| Nilashi et al. (2017) | Age, sex, BMI | High density lipoprotein cholesterol, triglycerides, fast plasma glucose, Hemoglobin A1c | Systolic blood pressure | Shortness of breath, frequent urination at night, excessive thirst | History of high blood glucose, parental history of diabetes | Waist/hip ratio, waist circumference | 
| Maniruzzaman et al. (2017) | Age, sex, BMI | High density lipoprotein cholesterol, triglycerides, fast plasma glucose, Hemoglobin A1c | Systolic blood pressure | Shortness of breath, frequent urination at night, excessive thirst | History of high blood glucose, parental history of diabetes | Waist/hip ratio, waist circumference | 
| Kagawa et al. (2017) | Random glucose, glycol-albumin, HbA1c, GAD antibody, IA2 antibody, C-peptide | T2DM medication | ICD-10 code, I25l-insulin biding ratio | |||
| Alghamdi et al. (2017) | Age, black, obesity | Metabolic equivalent | Resting heart rate, resting systolic blood pressure, resting diastolic blood pressure | Sedentary lifestyle | Family history of premature coronary artery disease, hypertension, aspirin | |
| Esteban et al. (2017) | Fasting glycemia, HbA1c | Diabetes Mellitus related prescriptions filled | Diabetes Mellitus related codes | |||
| Anderson et al. (2015) | Age, gender, BMI, race, region, insurance status, average annual household income, education status | Hemoglobin A1c, fasting glucose, 2h oral glucose tolerance, random glucose, triglycerides, total bilirubin, alanine aminotransferase, creatinine, low-density lipoprotein, high-density lipoprotein | Heart rate, blood pressure, body temperature |