Balloon-assisted endoscopic stricturotomy for small bowel fibrostenotic strictures: A comparison of Crohn’s disease-related and non-Crohn’s disease strictures

Table 1 Baseline characteristics of patients undergoing endoscopic stricturotomy

Variable	Total (n = 57)	CD group (n = 32)	Non-CD group (n = 25)	Statistic	P value
Age at onset (year)	33.0 (26.0-48.0)	28.0 (23.0-36.0)	45.0 (32.0-55.0)	Z = -2.86	0.004
Stricture diameter (mm)	4 (3-5)	4 (3-5)	4 (3-4)	Z = -0.73	0.467
Sex				χ2 = 0.26	0.607
Male	39 (68.4)	21 (65.6)	18 (72.0)
Female	18 (31.6)	11 (34.4)	7 (28.0)
Prior abdominal surgery				χ2 = 4.40	0.036
No	36 (63.2)	24 (75.0)	12 (48.0)
Yes	21 (36.8)	8 (25.0)	13 (52.0)
Stricture location				-	0.772
Ileum	40 (70.2)	22 (68.8)	18 (72.0)
Jejunum	10 (17.6)	5 (15.6)	5 (20.0)
Ileum + jejunum	7 (12.3)	5 (15.6)	2 (8.0)
Severe stenosis				-	1.000
No	2 (3.5)	1 (3.1)	1 (4.0)
Yes	55 (96.5)	31 (96.9)	24 (96.0)
Stricture length (cm)				χ2 = 0.07	0.799
≤ 2	42 (73.7)	18 (72.0)	24 (75.0)
> 2	15 (26.3)	7 (28.0)	8 (25.0)
Prior biologic therapy
No	46 (80.7)	21 (65.6)	25 (100.0)	χ2 = 8.56	0.003
Yes	11 (19.3)	11 (34.4)	0 (0.0)

The data are presented as median (interquartile range) or n (%). Group comparisons were performed using Student’s t test, Mann-Whitney U test, χ² test, or Fisher’s exact test, as appropriate. A dash (-) in the statistics column indicates that Fisher’s exact test was used. Age at onset refers to the age at onset of stricture-related symptoms. Prior biologic therapy was applicable only to patients with Crohn’s disease and was therefore not considered a candidate variable for multivariable regression. CD: Crohn’s disease.