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Table 1 Clinical features of the patient population

From: Circulating cell-free methylated DNA and lactate dehydrogenase release in colorectal cancer

Clinical feature Number of patients (%) Clinical feature Number of patients (%)
Total number of patients 259   
Age a   Metastatic disease  
≤ 65 years 129 (50) M0 170 (66)
> 65 years 130 (50) M1 89 (34)
Sex   Tumor grade d  
Male 145 (56) G1 & G2 132 (51)
Female 114 (44) G3 & G4 117 (45)
Tumor size b   Localization  
T1 15 (6) Colon 122 (47)
T2 48 (19) Sigmoid 47 (18)
T3 153 (59) Rectum 90 (35)
T4 42 (16) UICC stage  
Nodal status c   I 51 (20)
N0 137 (53) II 68 (26)
N1 66 (25) III 51 (20)
N2 50 (19) IV 89 (34)
  1. aMean age: 64.8 years.
  2. bTumor size was unknown in 1 case.
  3. cNodal status was unknown in 6 cases.
  4. dTumor grade was unknown in 10 cases.