Baseline Characteristics of the 305 Participating Children
| Characteristic | Baseline |
|---|---|
| Age, median (IQR), years | 7.8 (5.7–10.5) |
| Age category, No. (%) | |
| 4–5 years | 88 (28.9) |
| 6–9 years | 126 (41.3) |
| ≥10 years | 91 (29.8) |
| Sex, No. (%) | |
| Boys | 116 (38.0) |
| Girls | 189 (62.0) |
| Diagnosis of physician, No. (%) | |
| Generalized abdominal pain | 174 (57.0) |
| Localized abdominal pain | 57 (18.7) |
| Constipation | 31 (10.2) |
| Gastroenteritis | 17 (5.6) |
| Urinary tract infection/cystitis | 5 (1.6) |
| Stomach pain | 2 (0.7) |
| Appendicitis | 1 (0.3) |
| Othera | 10 (3.3) |
| No diagnosis available | 8 (2.6) |
| Symptom classification, No. (%) | |
| Functional dyspepsia | 24 (7.9) |
| Irritable bowel syndrome | 114 (37.4) |
| Functional abdominal pain | 152 (49.8) |
| Missing classification | 15 (4.9) |
ICPC=International Classification of Primary Care.
↵a Other diagnoses were acute upper respiratory tract infection (ICPC code R74, n = 3), otitis media (H71, n = 1), hernia inguinalis sinistra (D89, n = 1), pneumonia (R81, n = 1), mononucleosis infection (A75, n = 1), other viral disease with exanthema (A76, n = 1), lymphadenitis mesenterica (n = 1), fatigue/ malaise (A04, n = 1).