Intentional injury among the indigenous and total populations in British Columbia, Canada: trends over time and ecological analyses of risk

Table 1 Hospital separations for intentional injuries^a, British Columbia, 1991–2010^b

	P-years^c	Obs^d	Exp^e	Rate ^f	95% CI for Rate			SRR^g	95% CI for SRR
BC, total population
Intentional	78,256,306	65,802	65,802	8.4	8.3	to	8.5	1	[reference]
Self-inflicted	78,256,306	38,590	38,590	4.9	4.9	to	5.0	1	[reference]
Inflicted by another	78,256,306	27,212	27,212	3.5	3.4	to	3.5	1	[reference]
BC, Indigenous
Intentional	2,541,060	11,506	2990	45.3	44.5	to	46.1	3.85	3.71	to	3.99
Self-inflicted	2,541,060	6036	1738	23.8	23.2	to	24.4	3.47	3.31	to	3.64
Inflicted by another	2,541,060	5470	1252	21.5	21.0	to	22.1	4.37	4.13	to	4.62
BC, Indigenous, off-reserve
Intentional	1,403,813	6009	1531	42.8	41.7	to	43.9	3.92	3.74	to	4.13
Self-inflicted	1,403,813	3029	889	21.6	20.8	to	22.4	3.41	3.19	to	3.64
Inflicted by another	1,403,813	2980	642	21.2	20.5	to	22.0	4.64	4.30	to	5.02
BC, Indigenous, on-reserve
Intentional	1,131,862	5468	1457	48.3	47.0	to	49.6	3.75	3.57	to	3.96
Self-inflicted	1,131,862	2997	848	26.5	25.5	to	27.4	3.54	3.31	to	3.78
Inflicted by another	1,131,862	2471	610	21.8	21.0	to	22.7	4.05	3.74	to	4.39

^a“Intentional injury” defined as Most Responsible Diagnosis in the range ICD9:800–999 or ICD10:S00-T98, and supplemental diagnosis in the range ICD9:E950-E958 or ICD10:X60-X84 (self-inflicted) or ICD9:E960-E968 or ICD10:X85-Y09 (inflicted by another)
^bInjuries occurring during the observation period 1991-Apr-01 to 2010-Mar-31
^cPerson-years is the sum of the annual population counts times the fraction of each year included in the observation period
^dObserved number of injuries
^eExpected number, indirectly standardized, based on age, gender and HSDA-specific rates in the total population of BC
^fCrude Rate per 10,000 person-years
^gStandardized Relative Risk (compared to the total population of BC) = Observed/Expected

ISSN: 1475-9276