Incidence and treatment of mediastinal leakage after esophagectomy: Insights from the multicenter study on mediastinal leaks

Table 1 Patients’ characteristics and perioperative information

	Number of patients	Patients with ML n (%)	P value
Total	501	59 (11.8)
ASA score			0.43
1-2	266	32 (12.0)
3-4	158	24 (15.2)
Histology			0.96
Adenocarcinoma	385	44 (11.4)
Squamous carcin.	101	12 (11.8)
Other	7	2 (28.5)
T			0.34
1-2	212	34 (16.0)
3-4	280	34 (12.1)
N			0.098
0	200	36 (18.0)
+	274	31 (11.3)
Neoadjuvant chemotherapy			0.89
Yes	314	37 (11.8)
No	187	22 (11.8)
Pyloric procedure			0.14
Yes	53	10 (18.9)
No	448	49 (10.9)
	Patients with no ML	Patients with ML	P value
Median body mass index (range)	25 (15-33.3)	27.5 (17.7-35)	0.0328
Median surgery duration (range)	360 (127-700)	330 (173-615)	0.6707

ML: Mediastinal leakage.