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Table 1 Baseline characteristics of the patient and tumors

From: Efficacy and safety of additional surgery after non-curative endoscopic submucosal dissection for early colorectal cancer

Variables

Total

Patients

51

Age

 Average ± s.d.(median, range),years

63.0 ± 9.5(63,38–80)

  ≤ 60 years

22(43.1%)

  > 60 years

29(56.9%)

Sex

 Male

31(60.8%)

 Female

20(39.2%)

Tumors

51

Tumor size

 Average ± s.d.(median, range),cm

2.6 ± 0.9(2.0,1.5–5.0)

  < 40 mm

42(82.4%)

  ≥ 40 mm

9(17.6%)

Tumor location

 Right side of colon

7(13.7%)

 Left side of colon

14(27.4%)

 Rectum

30(58.9%)

Growth type

 Laterally spreading tumor

20(39.2%)

 Polypoid

31(60.8%)