Risk factors for postoperative stoma outlet obstruction in ulcerative colitis

Table 6 Patient characteristics in the stoma outlet obstruction group

	sSOO (n = 18)	rSOO (n = 7)	P value
Age1 (yr), (range)	50.5 (13-77)	50 (16-71)	0.745
Gender
Male	6 (33.3%)	6 (85.7%)	0.337
Female	12 (66.7%)	1 (14.3%)
Indication for surgery
Medical intractability	12 (66.7%)	4 (57.1%)	0.499
Malignancy or dysplasia	6 (33.3%)	3 (42.9%)
BMI1 (kg/m2), (range)	18.9 (14.8-25.5)	21.8 (19.0-24.2)	0.158
Mayo endoscopic score1 (range)	2 (0-3)	2 (0-3)	0.657
Extent of disease
Pancolitis	17 (94.4%)	7 (100.0%)	0.720
Left-sided colitis	1 (5.6%)	0 (0.0%)
Proctitis	0 (0.0%)	0 (0.0%)
Disease duration1 (mo), (range)	40.5 (3-336)	49 (15-108)	0.923
Disease severity
Mild	5 (27.8%)	1 (14.3%)	0.141
Moderate	11 (61.1%)	3 (42.9%)
Severe	1 (5.6%)	3 (42.9%)
Fulminant	1 (5.6%)	0 (0.0%)
Total glucocorticoid dose from onset of UC to surgery2
10000 mg or more	1	1	0.521
Less than 10000 mg	13	5
Total glucocorticoid dose 1 mo before surgery1 (mg), (range)	0 (0-765)	0 (0-280)	0.745
Preoperative total protein level1 (g/dL), (range)	6.8 (4.8-9.3)	6.8 (4.5-8.1)	0.745
Preoperative albumin level1 (g/dL), (range)	3.5 (2.0-4.6)	4.2 (2.3-4.6)	0.657

¹Variables are indicated by median.

²Variable is unknown in 5 patients.