Table 3

Prevalence of ulcerative colitis in Olmsted County on 1 January 1991 by age and sex^3-150

Age		Men				Women			Total
Age		n	Rate3-151			n	Rate3-151		n	Rate3-151
<20	1	6		1	6		2	6
20–29	10	123		11	122		21	123
30–39	14	145		22	218		36	182
40–49	35	539		21	304		56	417
50–59	24	527		19	423		43	475
60–69	15	490		14	402		29	443
⩾70	8	309		23	469		31	414
Subtotal	107	210		111	203		215	206
Adjusted3-152		238 (192–285)		217 (176–258)		229 (198–260)

↵3-150 Includes definite and probable cases.
↵3-151 Crude rate (cases per 100 000 person years).
↵3-152 Male and female rates are age adjusted to US white population, 1990 (95% confidence interval (CI)); total rate is age and sex adjusted to US white population, 1990 (95% CI).