A randomized controlled trial of endoscopic steroid injection for prophylaxis of esophageal stenoses after extensive endoscopic submucosal dissection

Table 5 Subgroup analysis of patients with mucosal defects involving the whole esophageal circumference

Treatment *vs.* Control in the WCMD	Treatment subgroup	Control subgroup	p-value
Treatment *vs.* Control in the WCMD	n = 5	n = 5	p-value
Frequency of stricture, n (%)	5 (100)	5 (100)	0.99
Required dilatation sessions, n mean ± SD (range)	10.4 ± 3.5(6–15)	22.2 ± 10.6 (13–40)	0.046
Perforation by dilatations, n per session (%)	0/52 (0)	1/111 (0.9)	0.99
Minimum diameter of stenotic region, mm mean ± SD (range)	7.7 ± 1.7 (5.4-9.6)	6.7 ± 3.4 (5.1-12.7)	0.58
Duration for dilatations, month mean ± SD (range)	6.2 ± 4.4 (2–13)	10.0 ± 5.7 (6–20)	0.27

Abbreviations: WCMD, whole circumferential mucosal defect; NWCMD, non-WCMD; SD, standard deviation.

ISSN: 1471-230X