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Table 3 Characteristics of dilatation procedures undertaken in the treatment and control groups

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

Treatment vs. Control Treatment group Control group p-value
n = 16 n = 16
Frequency of stricture, n (%) 10 (62.5) 14 (87.5) 0.22
Required dilatation sessions, n 6.1 ± 6.2 12.5 ± 10.1 0.038
mean ± SD (range) (0–17) (0–40)
Perforation by dilatations, n per session (%) 1/97 (1.0) 1/200 (0.5) 0.55
Minimum diameter of strictured region, mm mean ± SD (range) 11.0 ± 4.6 (5.4-21.8) 7.1 ± 2.9 (5.1-12.8) 0.008
Duration of dilatation therapy, months mean ± SD (range) 3.5 ± 4.0 (0–13) 6.1 ± 5.0 (0–20) 0.11
  1. Abbreviation: SD, standard deviation.