Table 1.

Characteristics of the Study Cohort

Characteristic	With psychiatric co- morbidity	Without psychiatric co-morbidity	p-value
Crohn’s disease	(n = 997)	(n = 4,408)
Age in years (mean (SD))	49.5 (17.7)	44.7 (19.1)	< 0.001
Age at first IBD diagnosis code (mean (SD))	42.0 (17.7)	38.5 (18.8)	< 0.001
Female (%)	62	52	< 0.001
Modified Charlson score (mean (SD)	2.8 (2.5)	1.1 (1.8)	< 0.001
Duration of follow-up in years (mean (SD))	11.5 (6.8)	7.7 (6.5)	< 0.001
Penetrating disease	7%	6%	0.10
Stricturing disease	12%	8%	< 0.001
Perianal disease	16%	12%	0.001
Ulcerative colitis	(n = 1,050)	(n = 4,379)
Age in years (mean (SD))	52.7 (18.3)	47.9 (18.5)	< 0.001
Age at first IBD diagnosis code (mean (SD))	45.2 (17.8)	41.1 (18.1)	< 0.001
Female (%)	66	50	< 0.001
Modified Charlson score (mean (SD)	2.8 (2.5)	1.1 (1.7)	< 0.001
Duration of follow-up in years (mean (SD))	12.5 (6.7)	9.1 (6.8)	< 0.001

IBD – Inflammatory bowel diseases; SD – standard deviation