Predisposing factors for positive D-Xylose breath test for evaluation of small intestinal bacterial overgrowth: A retrospective study of 932 patients

Table 3 Association of previous abdominal surgical procedures (yes/no) with small intestinal bacterial overgrowth n (%)

Procedure	+XBT	-XBT	P value	OR (95%CI)
Gastric bypass	15 (3)	8 (2)	0.32	1.54 (0.65-3.69)
Hernia repair	14 (3)	25 (6)	0.01	0.44 (0.23-0.86)
Cholecystectomy	142 (28)	139 (33)	0.07	0.77 (0.58-1.02)
Appendectomy	106 (21)	67 (16)	0.07	1.37 (0.98-1.92)
Hysterectomy (females)	183 (40)	90 (33)	0.07	1.34 (0.98-1.84)

Limited patient numbers for Nissen Fundlopication (n = 17), Billroth I (n = 1) and Billroth II (n = 4) procedures. Subanalyses for gender performed on all elements of Table 3. Gender did not significantly alter the P value or odds ratio between subsets. XBT: D-Xylose breath test.