Table 1: Demographics of individuals after Roux-en-Y gastric bypass surgery undergoing glucose-hydrogen breath testing ().

Age
 Mean49 years
 Range28–71 years
Gender
 Female60 (95%)
 Male3 (5%)
Race
 Black Americans44 (70%)
 Caucasians19 (30%)
Body mass index
 Mean ± SEM35 ± 10 kg/m2
 Range21 to 54 kg/m2
Months between bariatric
surgery and breath testing
 Mean ± SEM65 ± 5 months
 Range6 to 228 months