Table 1.

Patient characteristics

	Female	Male	Overall
Patients, n (%)	47 (57 %)	35 (43 %)	82 (100 %)
Age, years (mean ± SEM)	10.8 ± 3.3	10.1 ± 3.2	10.7 ± 3.5
Minimum	5.0	5.6	5.0
Maximum	17.6	17.1	17.6
Clinical symptoms in 4 weeks preceding test (score ≥2)
Abdominal pain, n (%)	20 (43 %)	18 (51 %)	38 (46 %)
Nausea, n (%)	13 (28 %)	12 (34 %)	25 (31 %)
Meteorism, n (%)	12 (26 %)	6 (17 %)	18 (22 %)
Flatulence, n (%)	16 (34 %)	13 (37 %)	29 (35 %)
Diarrhea, n (%)	8 (17 %)	9 (26 %)	17 (21 %)
Relevant symptoms on day of test (score ≥2)
Before fructose ingestion, n (%)
Abdominal pain, n (%)	8 (17 %)	3 (9 %)	11 (13 %)
Nausea, n (%)	5 (11 %)	5 (14 %)	10 (12 %)
Meteorism, n (%)	9 (19 %)	1 (3 %)	10 (12 %)
Flatulence, n (%)	4 (9 %)	1 (3 %)	5 (6 %)
Diarrhea, n (%)	0 (0 %)	1 (3 %)	1 (1 %)
After fructose ingestion, n (%)
Abdominal pain, n (%)	17 (36 %)	17 (49 %)	34 (41 %)
Nausea, n (%)	10 (21 %)	10 (29 %)	20 (24 %)
Meteorism, n (%)	14 (30 %)	8 (23 %)	22 (27 %)
Flatulence, n (%)	5 (11 %)	9 (26 %)	14 (17 %)
Diarrhea, n (%)	3 (6 %)	4 (11 %)	7 (9 %)