Table 1.

Characteristics of the study participants.

Characteristics		Control group (n=25)	Intervention group (n=24)	Full sample (N=49)	t testa (df)	χ2a (df)	P value
Age (years), mean (SD)		25.88 (5.82)	26.96 (6.69)	26.41 (6.22)	–0.60 (45.53)	N/Ab	.55
Age at diagnosis (years), mean (SD)		21.40 (6.42)	19.88 (8.07)	20.65 (7.24)	0.73 (43.91)	N/A	.47
Sex, n (%)
	Female	23 (92)	24 (100)	47 (96)	N/A	0.5 (1)	.49
	Male	2 (8)	0 (0)	2 (4)	N/A	—c	—
Type of diagnosis, n (%)
	Crohn disease	14 (56)	16 (67)	30 (61)	N/A	0.2 (1)	.64
	Ulcerative colitis	11 (44)	8 (33)	19 (39)	N/A	—	—
Knowledge about IBDd, IBD-KNOWe score, mean (SD)
	Preintervention	18.28 (3.76)	18.67 (3.05)	18.47 (3.40)	–0.40 (45.73)	N/A	.69
	Postintervention	18.08 (3.60)	21.67 (1.55)	19.84 (3.31)	–4.56 (32.88)	N/A	<.001

^aThe t test (2-tailed) and chi-square test were used to measure the difference between the control and intervention groups.

^bN/A: not applicable; this test was not applied to this variable.

^cThe chi-square value and its related P value for a group are reported in the top row for that group.

^dIBD: inflammatory bowel disease.

^eIBD-KNOW: Inflammatory Bowel Disease Knowledge; scores range from 0 to 24 points.