Table 5.

Incidence mortality rate per 100,000 person-years for each group, non-cocaine psychostimulant-related deaths, cocaine only-related deaths, and all cause mortality by weeks post-prison discharge

Interval	N At Risk	Deaths	Tot Days at Risk in Interval	Tot Yrs at Risk in Interval	Incidence Mortality Rate (IMR)*	95% CI for IMR
Non-Cocaine Psychostimulant-Related Deaths (T43.6)
Weeks 1–2	30,237	5	417,777	1,143.81	437.1	(142, 1,020)
Weeks 3–4	29,519	1	409,692	1,121.68	89.2	(2, 497)
Weeks 5–6	28,961	0	402,091	1,100.87	0.0	(0, 335)
Weeks 7–8	28,437	0	394,560	1,080.25	0.0	(0, 342)
All Weeks	30,237	25	18,519,091	50,702.51	49.3	(30, 69)
Cocaine only-Related Deaths (T40.5)
Weeks 1–2	30,237	14	417,777	1,143.81	1,224.0	(583, 1865)
Weeks 3–4	29,519	2	409,692	1,121.68	178.3	(22, 644)
Weeks 5–6	28,961	3	402,091	1,100.87	272.5	(56, 797)
Weeks 7–8	28,437	3	394,560	1,080.25	277.7	(57, 812)
All Weeks	30,237	49	18,519,091	50,702.51	96.6	(70, 124)
All Cause Mortality
Weeks 1–2	30,237	38	417,777	1,143.81	3,322.2	(2,266, 4,379)
Weeks 3–4	29,519	13	409,692	1,121.68	1,159.0	(529, 1,789)
Weeks 5–6	28,961	8	402,091	1,100.87	726.7	(313, 1,432)
Weeks 7–8	28,437	11	394,560	1,080.25	1,018.3	(417, 1,620)
All Weeks	30,237	443	18,519,091	50,702.51	873.7	(792, 955)

^*Incidence Mortality Rate = Deaths per 100,000 Person Years-at-Risk