Table 3.
Variable assignment used in logistic regression and decision tree
| Variable | Assignment |
|---|---|
| CIMT | L-CIMT or R-CIMT met any of the following criteria |
| 0 = normal (CIMT < 1 mm) | |
| 1 = increased CIMT (CIMT ≥ 1 mm) | |
| Gender | 0 = male |
| 1 = female | |
| Age | 1 = young and middle-aged (age < 60 years) |
| 2 = old age (age ≥ 60 years) | |
| Smoking | 0 = no |
| 1 = yes | |
| Blood pressure | 0 = normal (SBP < 140 mmHg and/or DBP < 90 mmHg) |
| 1 = hypertention (SBP ≥ 140 mmHg and/or DBP ≥ 90 mmHg) | |
| BMI | 1 = normal (BMI < 24 kg/m2) |
| 2 = overweight (24 kg/m2 ≤ BMI < 28 kg/m2) | |
| 3 = obesity (28 kg/m2 ≤ BMI < 30 kg/m2) | |
| 4 = severe obesity (BMI ≥ 30 kg/m2) | |
| Waist circumference | 0 = normal (male < 90 cm, female < 85 cm) |
| 1 = increased waist circumference (male ≥ 90 cm, female ≥ 85 cm) | |
| VFA | 0 = normal (VFA < 80 cm2) |
| 1 = increased VFA (VFA ≥ 80 cm2) | |
| SFA | 0 = normal (SFA < 100 cm2) |
| 1 = increased SFA (SFA ≥ 100 cm2) | |
| Glu 0 | 1 = excessively controlled (Glu0 < 4.4 mmol/L) |
| 2 = well controlled (4.4 mmol/L ≤ Glu0 ≤ 7.0 mmol/L) | |
| 3 = poorly controlled (Glu0 > 7.0 mmol/L) | |
| Glu120 | 1 = well controlled (Glu120 ≤ 7.8 mmol/L) |
| 2 = generally controlled (7.8 mmol/L < Glu120 < 10 mmol/L) | |
| 3 = poorly controlled (Glu120 ≥ 10 mmol/L) | |
| HbA1c |
1 = well controlled (HbA1c < 7 %) 2 = generally controlled (7 % ≤ HbA1c < 8 %) 3 = poorly controlled (HbA1c ≥ 8 %) |
| CKD | 1 = G1 (eGFR ≥ 90 ml/min) |
| 2 = G2 (60 ml/min ≤ eGFR < 90 ml/min) | |
| 3 = G3 (30 ml/min ≤ eGFR < 60 ml/min) | |
| UA | 0 = normal |
| 1 = hyperuricemia (male > 420 ummol/L; female > 360 umol/L) | |
| Blood lipid | 0 = normal |
| 1 = dyslipidaemia (met any of the following criteria: TG ≥ 2.26 mmol/L; TC ≥ 6.26 mmol/L; LDL≥ 4.14 mmol/L; HDL < 1.04 mmol/L) | |
| ABI | 0 = non-stenosis (L-ABI and/or R-ABI > 0.9) |
| 1 = stenosis (L-ABI or R-ABI ≤ 0.9) |
CIMT carotid intima media thickness, SBP systolic blood pressure, DBP diastolic blood pressure, BMI body mass index, VFA visceral fat area, SFA subcutaneous fat area, Glu0 fasting blood glucose, Glu120 2-hour postprandial blood glucose, HbA1C glycated hemoglobin A1c, CKD chronic kidney disease, eGFR estimated glomerular filtration rate, UA uric acid, TG triglyceride, TC cholesterol, LDL-c low density lipoprotein cholesterol, HDL-c high density lipoprotein cholesterol, ABI ankle brachial index, L-ABI left ankle brachial index, R-ABI right ankle brachial index