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Table 1 Variables and their assignments

From: Exploratory study on classification of diabetes mellitus through a combined Random Forest Classifier

Factors

Assignment

Gender (\({\mathrm{x}}_{1}\))

Male = 1*; Female = 2

Age (\({\mathrm{x}}_{2}\))

 < 40 = 1*;40 ~  = 2;60 ~  = 3;

Region (\({\mathrm{x}}_{3}\))

Village = 1*; City = 2

Ethnic (\({\mathrm{x}}_{4}\))

Ethnic Han = 1*; National minority = 2

Culture level (\({\mathrm{x}}_{5}\))

Elementary school and below = 1*; Junior and senior high school = 2; College degree and above = 3

Occupation (\({\mathrm{x}}_{6}\))

Farmer = 1*; Retirees or unemployers = 2; Employers = 3; other = 4

Marital status (\({\mathrm{x}}_{7}\))

Spinsterhood = 1*; Married or cohabiting = 2; Divorced, widowed or separated = 3

Smoking (\({\mathrm{x}}_{8}\))

NO = 0; YES = 1

Drinking status (\({\mathrm{x}}_{9}\))

Never drink = 1*; Drinking every day = 2; Frequently = 3; Occasionally = 4

Physical activity (\({\mathrm{x}}_{10}\))

Insufficient = 1*; Normal = 2; Sufficient = 3

Fresh fruit (\({\mathrm{x}}_{11}\))

 < 100 g/d = 1*;100 ~ 200 g/d = 2; > 200 g/d = 3

Vegetable intake level (\({\mathrm{x}}_{12}\))

 < 400 g/d = 1*;400 ~ 500 g/d = 2; > 500 g/d = 3

Meat (\({\mathrm{x}}_{13}\))

 < 50 g/d = 1*;50 ~ 100 g/d = 2; > 100 g/d = 3

Heart rate(\({\mathrm{x}}_{14}\))

Bradycardia = 1; Normal = 2*; Tachycardia = 3

BMI(\({\mathrm{x}}_{15}\))

 < 18.5 = 1*;18.5 ~  = 2, 24.0 ~  = 3;28.0 ~  = 4

Central obesity (\({\mathrm{x}}_{16}\))

NO = 0*; YES = 1

Hypertension (\({\mathrm{x}}_{17}\))

NO = 0*; YES = 1

Hyperlipidemia(\({\mathrm{x}}_{18}\))

NO = 0*; YES = 1

Diabetes mellitus (y)

NO = 0*; YES = 1

  1. *Reference standard