Els van de Vijver

107 Table 1 | Demographic, clinical and laboratory characteristics of fatigued and non-fatigued patients Fatigued patients (n=23) Non-fatigued patients (n=83) p-value Female gender 16 (70%) 32 (39%) 0.008 Age category 0.359 8-12 years 7 (30%) 34 (41%) 13-18 years 16 (70%) 49 (59%) IBD phenotype 0.821 M Crohn 18 (78%) 59 (71%) CU 5 (22%) 20 (24%) IBDU 0 (0%) 4 (5%) Disease activity score * 0.003 Remission 6 (26%) 47 (63%) Mild 17 (74%) 27 (36%) Moderate 1 (1%) Disease duration in years 2 (1-3) 1 (0-3) ** 0.768 Mean haemoglobin Z-score (SD) -1.7 (1.2) -1.5 (1.7) 0.589 Number (proportion) of patients with anaemia (Hb < -2.0 SD) 12 (52%) 31 (37%) 0.200 Number (proportion) of patients with anaemia (HB<-1.5 SD) 13 (57%) 40 (48 %) 0.238 Mean ferritin (SD) in µg/l 14 (7-31) 23 (12-43) # 0.206 Number (proportion) of patients with iron deficiency anaemia 11 (50%) 24 (32.4%) 0.133 Faecal calprotectin in µg/g mean (SD) 1085.5 (1608.4)** 833.9 (1280.1) Faecal calprotectin (≥ 250 g/g) 10 (53%)** 36 (55%) 0.832 * 8 missing values,**4 missing values, #17 missing values, ##18 missing values Self-reported fatigue and biological and functional parameters 107