Table 2. Comparisons of incidence density of cancer between ALN group and non-ALN group by age and gender characteristics.

	Non-ALN			ALN
Variables	Cases	Person-years	Rate†	Cases	Person-years	Rate†	IRR	(95% CI)
All
<75 yrs	319	35,045	9.10	126	11,577	10.9	1.20	(0.97–1.47)
≥75 yrs	318	22,127	14.4	110	7,713	14.3	0.99	(0.80–1.23)
Overall	637	57,173	11.1	236	19,289	12.2	1.10	(0.95–1.28)
Women
<75 yrs	265	31,664	8.37	105	10,420	10.1	1.20	(0.96–1.51)
≥75 yrs	258	18,645	13.8	85	6,547	13.0	0.94	(0.73–1.20)
Overall	523	50,309	10.4	190	16,967	11.2	1.08	(0.91–1.27)
Men
<75 yrs	54	3,381	16.0	21	1,157	18.2	1.14	(0.69–1.88)
≥75 yrs	60	3,482	17.2	25	1,165	21.4	1.25	(0.78–1.99)
Overall	114	6,864	16.6	46	2,323	19.8	1.19	(0.85–1.68)

^†per 1,000 person-year.

IRR, incidence rate ratio, compared to non-ALN group.

^*p<0.05.