Table 3 The multivariate logistic regression analysis of risk factors for positive VM en bloc resected by HSP, EMR or ESD

  ≤ 1 cm

Ref

Ref

Ref

  ≤ 2 cm

2.12

0.04–125.82

0.719

0.40

0.10–1.56

0.185

0.68

–

1.000

  > 2 cm

0.00

–

0.998

0.43

0.06–3.08

0.401

0.00

–

0.998

 Sessile

Ref

Ref

Ref

 Pedunculated

0.16

0.00–7.89

0.36

0.79

0.21–3.01

0.732

0.26

0.02–3.47

0.307

 Proximal colon

Ref

Ref

Ref

 Distal colon

0.00

–

0.997

1.4

0.13–15.40

0.785

10.84

0.46–253.85

0.139

 Rectum

2.10

0.08–55.64

0.656

5.62

1.19–26.51

0.029

2.67

0.18–39.06

0.473

 AA

Ref

Ref

Ref

 ECRC pTis

0.00

–

0.997

3.99

0.24–65.83

0.333

3.18

0.26–39.60

0.369

 ECRC pT1a

0.00

–

0.999

23.90

2.55–223.76

0.005

2.96

0.24–36.43

0.396

 ECRC pT1b

14.88

0.64–343.43

0.092

111.84

1.96–1045.55

< 0.001

142.87

7.82–2803.00

0.001

 negative

Ref

Ref

Ref

 positive

0.67

–

1.000

3.66

0.56–23.89

0.175

1.12

0.05–23.52

0.942