TABLE 1.

Characteristics of patients

	Female	Male	Overall
Patients [n (%)]	123 (57%)	92 (43%)	215 (100%)
Drop outs [n (%)]	5 (4%)	4 (4%)	9 (4%)
Lactose challenge/drop out (n)	68/4	48/2	116/6
Fructose challenge/drop out (n)	55/1	44/2	99/3
Age, years (mean ± SEM)	11.3 ± 0.31	10.7 ± 0.4	11.0 ± 0.2
25th percentile	8.4	8.1	8.4
75th percentile	13.9	12.3	13.6
Weight (mean ± SEM)	37.6 ± 1.3	37.6 ± 1.8	37.6 ± 1.0
Breath test results
Lactose malabsorption [n (%)]	21 (32.8%)	14 (30.4%)	35 (31.8%)
Lactose intolerance [n (%)]	30 (46.9%)	20 (43.5%)	50 (45.5%)
Fructose malabsorption [n (%)]	22 (40.7%)	20 (47.6%)	42 (43.8%)
Fructose intolerance [n (%)]	15 (27.8%)	20 (47.6%)	35 (36.5%)