Table 1.

Baseline characteristics of the inflammatory bowel disease population in CCFA Partners, stratified by ever or current attempted GFD and never on GFD for symptom control

Characteristic	GFD n=314	Non-GFD n=1333	p-value
	Mean (SD) or %	Mean (SD) or %
Age, years	46.5 (15.4)	46.2 (15.4)	0.88
Sex
Female (%)	74	74	0.99
Type of IBD (%)
Crohn’s disease	61	63	0.62
Ulcerative/indeterminate colitis	39	37
Duration of disease years	17.4 (13.4)	16.5 (12.8)	0.25
Ostomy (% yes)	6.9	7.8	0.60
Medications (%)
5-ASA	74.5	71.4	0.27
Corticosteroids	27.7	23.6	0.12
Immunomodulators	45.9	47.0	0.70
Biologic anti-TNF	55.4	54.7	0.82
Education (%)
High school or less	7.4	6.4	0.51
College +	92.6	93.6
Disease activity
sCDAI**	148.8 (97.3)	142.5 (90.0)	0.35
SCCAI#	3.2 (2.5)	3.1 (2.6)	0.73
Quality of life SIBDQ^	5.0 (1.2)	5.1 (1.1)	0.70
BMI	25.7 (6.7)	26.0 (7.2)	0.60

^*by wilcoxon rank sum, t-test, chi square or fisher’s exact as appropriate

^**short Crohn’s disease activity index

^#simple clinical colitis activity index

^{^}short inflammatory bowel disease questionnaire