Table 3. Normative data for the “Sniffin' sticks” [21] and the patients' data, by sex and age group.

	Normative data* female		Normative data* male		IBD female			IBD male			CD female			CD male			UC female			UC male
	mean	sd	mean	sd	n	mean	sd	n	mean	sd	n	mean	sd	n	mean	sd	n	mean	sd	n	mean	sd
ID
16–35 yr	13.7	1.6	13.5	1.7	14	13.7	1.6	7	12.6	0.8	9	13.9	1.5	6	12.7	0.8	5	13.4	2.1	1	12
36–55 yr	13.5	1.6	13.1	1.9	15	13.6	1.7	14	13.3	3.2	8	13.5	1.7	7	12.1	4.2	5	13.8	1.8	7	14.4	1
56–75 yr	12.1	2.3	12.2	2.6	5	12	1.9	4	14	0.9	5	12	1.9	2	13.5	0.7	0			4	14.2	1
DIS
16–35 yr	12.9	1.9	12.6	2.0	14	13.1	1.4	7	10.6	3.9	9	13.2	1.5	6	11.2	3.9	5	12.8	1.3	1	7
36–55 yr	12.5	2.0	11.9	2.2	15	12.4	2.5	14	11.4	3.6	8	12.4	3	7	10.7	4.7	5	12.4	1.7	7	12	2.2
56–75 yr	10.7	2.5	10.7	2.8	5	12.4	1.1	4	10.7	1.9	5	12.4	1.1	2	10	1.4	0			4	11	2.2
THR
16–35 yr	9.4	2.6	9.2	3.0	14	6.6	2.3	7	6.3	1.5	9	6.8	2.5	6	6.8	0.9	5	6	2.1	1	3.5
36–55 yr	9.1	3.1	8.4	3.5	15	7.1	2.9	14	4.5	2.5	8	6.7	3.1	7	3.5	2.7	5	7.7	2.8	7	5.5	2
56–75 yr	7.4	3.5	7.2	3.6	5	5.2	1.7	4	5.6	3.1	5	5.2	1.7	2	4.9	2.3	0			4	6	3.6

^*Hummel et al. [21].