Table 1 Clinical data of the drainage and non-drainage groups

Age, years (IQR)^a

70 (69–74)

71 (67–75)

Male/female

20/4

8/5

BMI^b (IQR)

23.0 (20.0–25.1)

22.0 (18.9–23.4)

Thoracic esophagus/esophagogastric junction

14/10

9/4

cT 1/2/3/4

6/7/9/2

2/5/6/0

cN (+)/(−)

16/8

9/4

Squamous cell carcinoma/adenocarcinoma

12/12

9/4

Neoadjuvant chemotherapy

18 (75.0%)

11 (84.6%)