Table 1.

Diagnosis, demographic, and clinical data for those included compared to those not included.

	Included (n = 235)	Not included (n = 192)	p value
Diagnosis
Ulcerative colitis n (%)	112 (46)	88 (41)	0.387∗
Crohn's disease n (%)	134 (54)	124 (59)
Gender
Female n (%)	117 (49)	95 (50)	0.939∗
Age
Median (range)	39 (18–79)	40 (18–73)	0.151†
Disease duration
Median (range)	8 (0.10–45)	9 (1–44)	0.059†

^∗ χ ²

^†Mann Whitney U test.