Table 1

Patient characteristics

Confirmed IBD (n=42)Non-IBD (n=75)
Age in years, mean (SD; range)14 (3.3; 6–18)12.9 (3.8; 6–18)
Male patient (%)4550
Presenting symptoms (% (95% CI))
 Rectal blood loss62 (47 to 77)41 (30 to 52)
 Unintended weight loss or linear growth retardation55 (40 to 70)46 (35 to 57)
 Peri-anal symptoms (skin tag, fistula, fissure, abscess)19 (7 to 31)9 (3 to 15)
 Anaemia: <12 years: 7.1; girls ≥12 years: 7.4; boys ≥12 years: 8.1 (Hb cut-off point in mmol/litre) or other extra-intestinal manifestations (erythema nodosum, arthritis, uveitis)*83 (72 to 94)46 (35 to 57)
 Increased markers of inflammation: ESR >20 mm/h; C-reactive protein >10 mg/litre*83 (72 to 94)28 (18 to 38)
  • *p<0.05.

  • ESR, erythrocyte sedimentation rate; Hb, haemoglobin; IBD, inflammatory bowel disease.