Table 1: Patients and tumor characteristics.

Surgical group

One-step

Two-step A

(without TTT)

Two-step B

(with TTT)

Three-step

P^#

Siewert type (II / III)

Gender (Female / Male)

Age (years)

Histology

(AD / SCC / special types)

Depth of tumor invasion*

(T1 / T2 / T3 / T4)

Lymph node metastasis*

(N0 / N1 / N2 / N3)

TNM stage*

(I / II / III / IV)

Presence of NAC

(n = 16)

5 / 11

4 / 12

71±10

15 / 0 / 1

5 / 6 / 2 / 4

6 / 5 / 3 / 2

5 / 3 / 7 / 1

(n = 8)

3 / 5

1 / 7

71±6

7 / 1 / 0

4 / 0 / 3 / 1

4 / 1 / 2 / 1

4 / 0 / 4 / 0

(n = 13)

12 / 1

3 / 10

65±14

9 / 3 / 1

5 / 4 / 3 / 1

7 / 5 / 1 / 0

7 / 3 / 3 / 0

(n = 9)

8 / 1

3 / 6

71±9

5 / 3 / 1

6 / 1 / 1 / 1

5 / 2 / 0 / 2

5 / 1 / 2 / 1

0.0011

0.7947

0.7793

0.3126

0.3858

0.7850

0.6437

0.6468

Data given as number of patients or mean ± SD. TTT: technique for transthoracic transection of the esophagus during the abdominal phase. AD: adenocarcinoma. SCC: squamous cell carcinoma. NAC: neoadjuvant chemotherapy.

*Pathological staging.

#ANOVA or χ² test.