Table 3 Univariate analysis and multivariate analysis of risk factors for tumor recurrence in ESD for curative resection group

Age (≥ 65)

0.405

0.019–1.807

0.236

Sex(female)

0

0.999

Lesion a(≥ 2 cm)

8.062

1.473–44.139

0.016

6.526

0.876–48.623

0.067

Lesion b(≥ 2 cm)

1.061

0.133–9.958

0.959

Ulcer (+)

0

0.999

Location (a, Middle)

0.291

0.030–2.845

0.289

0.154

0.009–2.565

0.192

Location (a, Lower)

0.200

0.035–1.147

0.071

0.058

0.003–1.187

0.065

Location (b, Middle)

0.556

0.068–4.568

0.585

Location (b, Lower)

0.645

0.102–4.066

0.641

Histology (a, undifferentiated carcinoma)

6.167

0.725–52.468

0.096

63.492

1.821-2213.52

0.022

Histology (a, mixed-type carcinoma)

0

0

0.999

Histology (a, dysplasia¹)

0

0

0.999

Histology (b, undifferentiated carcinoma)

15.50

1.37-175.383

0.027

2.965

0.359–24.467

0.313

Histology (b, mixed-type carcinoma)

2.385

0.404–14.078

0.337

Histology (b, dysplasia¹)

0

0

0.999

Depth of invasion(T1b)