TABLE 4.

Poisson Regression—Incident Risk Ratios for Suicide Mortality by Year of Death (1986–2007) in Old-Olds (Aged 85 Years and Older) With 2002 Being the Year of Reference

	Women		Men
Year	IRR	p,a2*1 Sided	IRR	p,a2*1 Sided
1986	4.6154	0.0001	1.8542	0.2057
1987	3.3152	0.0009	1.3520	0.5626
1988	2.7766	0.0056	1.9229	0.1401
1989	2.7993	0.0047	0.8778	0.8182
1990	2.7872	0.0049	1.8669	0.1440
1991	2.7391	0.0062	2.2210	0.0477
1992	3.7573	0.0001	1.2771	0.5972
1993	2.2621	0.0288	0.8055	0.6780
1994	2.9254	0.0022	0.5881	0.3491
1995	1.9803	0.0673	1.5940	0.2360
1996	2.1853	0.0299	0.8346	0.6962
1997	2.2693	0.0202	1.1984	0.6534
1998	2.3915	0.0120	1.7557	0.1240
1999	1.0960	0.8230	0.5186	0.2075
2000	1.3864	0.3886	1.2077	0.6241
2001	1.9964	0.0447	0.2318	0.0216
2003	1.0774	0.8441	0.9593	0.9124
2004	1.2823	0.4897	1.5906	0.1644
2005	1.1296	0.7379	1.0606	0.8689
2006	1.1501	0.6946	1.1689	0.6480
2007	0.5323	0.1338	1.2825	0.4530

^ap values are from Wald χ² tests with df = 1.