Table 2: Number of individuals after Roux-en-Y gastric bypass surgery with an early rise of breath hydrogen or methane (SIBO) or a late rise of breath hydrogen or methane (glucose malabsorption).

Early rise in breath (30 minutes)
NoYes

Late rise in breathNo120
(45 minutes)Yes546

SIBO: Small Intestinal Bacterial Overgrowth.
The potential association between glucose malabsorption (late rise) and SIBO (early rise) was evaluated using Fisher’s exact test: .