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. 2020 Sep 10;8:e9920. doi: 10.7717/peerj.9920

Table 4. Operational definition of features.

Features/Target class Measurement Definition References
Target class Diagnosis of T2DM Discrete The probability of four kinds of T2DM diagnosis: E1121, E1143, and E1165 NA
Features Gender Discrete Gender of the patients, Male or Female. Anderson et al. (2015), Pei et al. (2019), Wu et al. (2018)
Age Continuous Age (in years) during out-patient services Anderson et al. (2015), Pei et al. (2019), Talaei-Khoei & Wilson (2018)
Smoking status Discrete Yes, quit, or no
BMI Continuous Body mass index Anderson et al. (2015), Pei et al. (2019), Wu et al. (2018)
Total Cholesterol Continuous The level of total cholesterol during out-patient services
Triglyceride Continuous The level of triglyceride during out-patient services Anderson et al. (2015), Talaei-Khoei & Wilson (2018)
Glucose (AC) Continuous The level of glucose (AC) during out-patient services Anderson et al. (2015)
Hemoglobin A1c Continuous The level of Hemoglobin A1c during out-patient services Anderson et al. (2015), Kagawa et al. (2017), Talaei-Khoei & Wilson (2018)
High density lipoprotein cholesterol Continuous The level of high-density lipoprotein cholesterol during out-patient services Anderson et al. (2015), Talaei-Khoei & Wilson (2018)
Low density lipoprotein cholesterol Continuous The level of low-density lipoprotein cholesterol during out-patient services Anderson et al. (2015)