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. 2017 Sep 12;5(9):E839–E846. doi: 10.1055/s-0043-113566

Table 3. Preoperative predictors of endoscopic submucosal dissection difficulty (n = 130 patients).

Colon Rectum
Univariate analysis OR (95 %CI) Multivariate analysis OR (95 %CI) Univariate analysis OR (95 %CI)
Male sex 1.07 (0.49 – 2.36)  –  0.77 (0.18 – 3.21)
Age (continuous) 0.94 (0.89 – 0.98)  0.94 (0.88 – 0.99) 0.95 (0.87 – 1.04)
Morphology

  • LST-G

 1 1

  • LST-NG

 3.60 (0.97 – 13.41) 10.49 (1.20 – 55.14) 5.33 (0.51 – 56.24)

  • Sessile

 4.50 (1.86 – 10.87)  3.51 (1.18 – 10.39) 1.33 (0.16 – 11.36)
Scar

  • Negative

 1 1

  • Positive

 10.70 (1.24 – 92.34) 12.68 (1.15 – 139.24) 12.25 (1.27 – 118.36)
Size area, cm 2

  • ≤ 7

 1 1

  • > 7 – ≤ 12

 0.15 (0.05 – 0.44)  0.20 (0.06 – 0.74) 0.21 (0.04 – 1.31)

  • > 12

 0.42 (0.16 – 11.11)  0.47 (0.13 – 1.68) 0.50 (0.08 – 3.13)
Superficial patterns

  • Regular

 1 1

  • Distorted

 4.95 (0.50 – 49.22) – 0.46 (0.04 – 5.75)
Location, segments Left: 1 Right: 0.88 (0.39 – 2.01)  –  Pelvic: 1 Perineal: 3.00 (0.68 – 13.31)
Location: semilunar fold

  • No

 1 1

  • Yes

 0.76 (0.33 – 1.76) – 1.00 (0.20 – 5.04)
Experience, procedures

  • 61 – 90

 1 1

  • 91 – 120

 0.33 (0.10 – 1.12)  0.27 (0.06 – 1.18) 0.53 (0.06 – 4.91)

  • 121 – 150

 0.28 (0.08 – 0.95)  0.19 (0.04 – 0.81) 3.20 (0.25 – 41.21)

  • 151 – 180

 0.17 (0.05 – 0.60)  0.08 (0.02 – 0.41) 0.80 (1.00 – 6.35)

  • 181 – 200

 0.18 (0.04 – 0.78)  0.12 (0.02 – 0.84) 0.20 (0.02 – 2.58)

OR, odds ratio; CI, confidence interval; LST, laterally spreading tumor; G, granular type; NG, nongranular type.