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Table 5 Rules extracted from decision tree

From: Analysis of risk factors for carotid intima-media thickness in patients with type 2 diabetes mellitus in Western China assessed by logistic regression combined with a decision tree model

Rule If Then
R1 If: non-smoking, male and normal waist circumference Then class: patients with normal CIMT (93.8%)
R2 If: non-smoking, male and waist circumference ≥ 90cm Then class: patients with increased CIMT (15.1%)
R3 If: non-smoking, female and normal VFA Then class: patints with normal CIMT (82.6%)
R4 If: non-smoking, female and VFA ≥ 80 cm2 Then class: patints with increased CIMT (32.6%)
R5 If: smoking, normal waist circumference Then class: patients with normal CIMT (59.9%)
R6 If: smoking, waist circumference ≥ 90 cm in male or ≥ 85 cm in female and CKD = G1 (eGFR ≥ 90 ml/min) Then class: patients with increased CIMT (56.1%)
R7 If: smoking, waist circumference ≥ 90 cm in male or ≥ 85 cm in female and CKD = G2 or G3 (30 ml/min ≤ eGFR < 90 ml/min) Then class: patients with normal CIMT (61.9%)
  1. R rule, CIMT carotid intima media thickness, VFA visceral fat area, CKD chronic kidney disease