Table 1. Age-standardized incidence rates (ASR) (sex and age-specific) of inflammatory bowel disease (IBD), Crohn’s disease (CD), ulcerative colitis (UC) and unclassified IBD (IBD-U) per 100,000 person-years (PY) in Saxony.

Total rates, sex-specific rates and age-specific incidence rates in age groups (AG) per year.

	mean annual population at risk	IBD			CD			UC			IBD-U
		n	ASR	[95% CI]	n	ASR	[95% CI]	n	ASR	[95% CI]	n	ASR	[95% CI]
Sex
M-AG 0–9	160,603	87	3.7	[2.9–4.5]	53	2.2	[1.6–2.9]	29	1.2	[0.8–1.7]	5	0.2	[0.0–0.4]
M-AG 10–14	84,366	225	17.8	[17.0–18.6]	155	12.3	[11.6–12.9]	62	4.9	[4.5–5.3]	8	0.6	[0.5–0.8]
Male	244,969	312	8.6	[7.6–9.5]	208	5.7	[4.9–6.5]	91	2.5	[2.0–3.2]	13	0.4	[0.2–0.6]
F-AG 0–9	153,101	66	3.0	[2.2–3.7]	42	1.9	[1.3–2.5]	22	1.0	[0.6–1.4]	<5	0.1	[0.0–0.2]
F-AG 10–14	80,082	154	12.8	[12.1–13.5]	88	7.3	[6.8–7.9]	63	5.2	[4.8–5.7]	<5	0.3	[0.2–0.4]
Female	233,183	220	6.4	[5.6–7.2]	130	3.8	[3.1–4.4]	85	2.5	[1.9–3.0]	5	0.1	[0.0–0.3]
AG–all patients
AG 0–9	313,704	153	3.3	[2.8–3.9]	95	2.1	[1.7–2.5]	51	1.1	[0.8–1.4]	7	0.2	[0.0–0.3]
AG 10–14	164,448	379	15.4	[14.8–15.9]	243	9.9	[9.4–10.3]	125	5.1	[4.8–5.4]	11	0.5	[0.4–0.5]
Total	478,152	532	7.5	[6.9–8.1]	338	4.8	[4.3–5.3]	176	2.5	[2.1–2.9]	18	0.3	[0.1–0.4]
Supplementary AG
M-AG 0–4	84,254	31	2.5	[2.1–2.7]	19	1.5	[1.3–1.7]	10	0.8	[0.6–1.0]	<5	0.2	[0.1–0.3]
M-AG 5–9	76,349	56	4.9	[4.5–5.3]	34	3.0	[2.6–3.3]	19	1.7	[1.4–1.9]	<5	0.3	[0.2–0.4]
F-AG 0–4	80,249	17	1.4	[1.2–1.6]	10	0.8	[0.7–1.0]	6	0.5	[0.4–0.6]	<5	0.1	[0.0–0.1]
F-AG 5–9	72,852	49	4.5	[4.1–4.9]	32	3.0	[2.6–3.3]	16	1.5	[1.2–1.7]	<5	0.1	[0.0–0.2]
AG 0–4	164,502	48	2.0	[1.8–2.1]	29	1.2	[1.0–1.3]	16	0.7	[0.6–0.8]	<5	0.1	[0.1–0.2]
AG 5–9	149,201	105	4.7	[4.4–5.0]	66	3.0	[2.7–3.2]	35	1.6	[1.4–1.7]	<5	0.2	[0.1–0.2]

M = male, F = female; source of population data [31].