CD	Crohn’s disease
CI	Confidence interval
EIM	Extraintestinal manifestations
EIC	Extraintestinal complications
HPA	Hypothalamus–pituitary–adrenal axis
HR	Hazard ratio
HRQOL	Health-related quality of life
IBD	Inflammatory bowel disease
MDD	Major depressive disorder
OR	Odds ratio
IRR	Incidence rate ratio
UC	Ulcerative colitis
WHO	World Health Organization