Table 1.

Characteristics of our patient group (n = 220).

Demographic details
Gender	122 F/98 M
Age (mean ± SD), years	40.5 ± 8.6
Past medical history
Gastrointestinal disease n (%)	38 (17.3%)
Cardiovascular disease n (%)	25 (11.4%)
Previous malignancy n (%)	5 (2.3%)
Renal disease n (%)	2 (0.9%)
Other past medical history n (%)  e.g. diabetes, rheumatological conditions	65 (29.5%)
Family history of GI malignancy n (%)	23 (10.5%)
Characteristics at presentation
Patients presenting with weight loss n (%)	17 (7.7%)
Hb at presentation (mean ± SD)	9.27 ± 2.36 g/dL
Lowest Hb recorded (n = 193) (mean ± SD)	8.53 ± 2.2 g/dL
MCV at presentation (mean ± SD)	71.54 ± 9.59 fL
Ferritin at presentation (n = 181) (mean ± SD)	13.16 ± 29.65 µg/L
Relevant medications n (%)	None: 201 (91.4%) Yes: 19 (8.6%) Antiplatelet medications (aspirin/clopidogrel): 7 NSAIDs: 7 Anticoagulants: 5 More than 1 medication: 2
Prior imaging investigations
Patients previously investigated with CT abdomen n (median; range)	60 (1; 1–3)
Patients previously investigated with MRE n (median; range)	15 (1; 1–3)

The number of patients is specified where data was not available for all patients.

CT: computed tomography; GI: gastrointestinal; Hb: haemoglobin; MCV: mean corpuscular volume; MRE: magnetic resonance enterography; NSAIDs: non-steroidal anti-inflammatory drugs; SD: standard deviation