Table 3.

Comparison of Glucose Breath Test Profiles Between Patients and Control Group

GBT profiles	Patient (N = 88)	LQT negative (n = 29)	Control (n = 30)	P-valuea
GBT positivity	16 (18.2%)	8 (27.6%)	2 (6.7%)	0.032
Subtypes
H2 (purely)	11 (12.5%)	7 (12.5%)	1 (3.3%)	0.064
CH4 (purely)	2 (2.3%)	0 (2.3%)	0 (0.0%)
Mixedb	3 (3.4%)	1 (3.4%)	1 (3.3%)
H2 + Mixedb	14 (15.9%)	8 (27.6%)	2 (6.7%)	0.032
CH4 + Mixedb	5 (5.7%)	1 (3.4%)	1 (3.3%)	0.981

^aCompared between lactose intolerance quick test (LQT) negative patients and controls.

^bMixed, both hydrogen and methane were positive.

GBT, glucose breath test; H₂, hydrogen; CH₄, methane.