Table 1. Number of observed cases of small intestine cancer, person-years and overall incidence rates.

	Men			Women
Variable	No. of cases	Person-years	Incidence ratea	No. of cases	Person-years	Incidence ratea
Time since measurement
0–4	42	4 704 799	1	36	5 104 845	1
5–9	55	4 186 615	1	62	4 630 922	1
10–14	84	3 539 359	2	78	4 042 558	2
15–19	77	2 974 592	3	97	3 554 864	3
20–24	107	2 514 913	4	92	3 134 983	3
25–29	101	2 100 174	5	108	2 716 707	4
⩾30	105	1 538 398	7	118	2 159 852	5
Age at measurement
20–29	45	4 858 466	1	50	5 599 610	1
30–39	102	4 647 809	2	106	5 282 390	2
40–49	182	6 530 026	3	170	7 043 688	2
50–59	157	3 458 166	5	155	4 467 454	3
60–69	72	1 703 355	4	97	2 423 560	4
70–74	13	361 029	4	13	528 029	2
Year of birth
<1900	17	468 357	4	19	686 032	3
1900–1909	67	1 775 881	4	94	2 555 664	4
1910–1919	157	3 514 584	4	161	4 554 801	4
1920–1929	177	4 995 227	4	156	5 576 162	3
1930–1939	91	4 317 744	2	97	4 836 647	2
1940–1949	48	4 646 655	1	52	5 114 247	1
⩾1950	14	1 840 403	1	12	2 021 176	1
BMI (kg/m2)
<18.5	4	138 630	3	10	549 699	2
18.5–24.9	281	12 576 460	2	301	14 439 090	2
25.0–29.9	247	7 840 365	3	196	7 436 780	3
⩾30.0	39	1 003 396	4	84	2 919 162	3
Height (cm) b
<150				9	367 010	2
<160/150–159	2	143 607	1	177	7 051 248	3
160–169	102	3 323 991	3	328	14 611 055	2
170–179/⩾170	307	11 763 593	3	77	3 315 417	2
⩾180	160	6 327 660	3
Total	571	21 558 851	3	591	25 344 730	2

^aNumber of cases of small intestine cancer per 100 000 person-years.

^bSplit categories pertain to men and women, respectively.