Table 1.

Age- and Sex-Specific Incidence of Diverticulitis per 100,000 Person-years Among Residents of Olmsted County, Minnesota in 3 Time Periods Between 1980–2007

Characteristic	1980–1989			1990–1999			2000–2007			1980–2007
Age-group, yr	Female	Male	Overalla	Female	Male	Overalla	Female	Male	Overalla	Female	Male	Overalla
18–29	5	12	8	7	5	6	13	23	18	8	13	10
30–39	22	41	31	28	41	34	39	77	58	29	53	41
40–49	66	68	67	81	102	91	131	182	156	97	124	110
50–59	195	174	185	184	173	178	262	281	271	216	212	214
60–69	281	294	287	344	285	316	491	341	419	374	307	343
70–79	437	401	423	431	331	390	560	502	534	476	413	450
80–89	641	411	574	454	435	448	617	544	592	564	470	535
90–99	467	1269	617	480	326	450	445	829	526	464	748	521
Subtotal	124	104	115	134	110	123	194	182	188	151	133	142
Age-adjustedb rate (95% CI)	148 (134–162)	145 (128–161)		149 (137–162)	137 (124–150)		208 (194–223)	210 (194–227)		170 (162–177)	166 (157–175)
Age- and sex-adjustedc rate (95% CI)			147 (136–157)			144 (135–153)			209 (198–220)			168 (162–174)

^aSex-adjusted to Olmsted County population in corresponding decade.

^bAge-adjusted to United States white population in 2000.

^cAge- and sex-adjusted to United States white population in 2000.