Table 4. Hospital stay according to the presence or absence of ESD-related complications.

	Patients with ESD-related complications	Days	Patients without ESD-related complications	Days	P value
Any complication	160	8 (5 – 35)	311	8 (3 – 21)	0.0002
Pyrexia	117	8 (7 – 35)	354	8 (3 – 21)	n.s.
Pneumonia (detected by CT at POD 1)	68	8 (5 – 35)	403	8 (3 – 29)	n.s.
Postoperative bleeding	20	9.5 (7 – 20)	451	8 (3 – 35)	< 0.0001
Perforation	5	10 (5 – 35)	466	8 (3 – 21)	0.0001

Statistical significance was tested by the Kruskal-Wallis test. Values are expressed as the number of patients or the median (range). CT: computed tomography: n.s.: not statistically significant; POD: postoperative day.