Worker compensation injuries among the Aboriginal population of British Columbia, Canada: incidence, annual trends, and ecological analysis of risk markers, 1987–2010

Table 2 Worker compensation injuries [1], British Columbia, 1987–2010 [2], by Health Service Delivery Area

HSDA	P-years [3]	Obs [4]	Exp [5]	Rate [6]	95% CI for Rate			SRR [7]	95% CI for SRR
11	1,847,429	22,605	25,976	122	121	to	124	0.87	0.86	to	0.88
12	1,878,968	24,204	25,856	129	127	to	130	0.94	0.92	to	0.95
13	7,129,280	92,766	93,549	130	129	to	131	0.99	0.99	to	1.00
14	4,987,600	59,730	70,736	120	119	to	121	0.84	0.84	to	0.85
21	5,455,829	94,435	74,278	173	172	to	174	1.27	1.26	to	1.28
22	11,998,748	211,048	183,029	176	175	to	177	1.15	1.15	to	1.16
23	13,344,187	251,995	191,340	189	188	to	190	1.32	1.31	to	1.32
31	3,979,078	51,080	59,421	128	127	to	129	0.86	0.85	to	0.87
32	13,897,287	170,380	224,694	123	122	to	123	0.76	0.76	to	0.76
33	6,104,957	69,383	88,384	114	113	to	114	0.79	0.78	to	0.79
41	7,873,455	104,328	109,547	133	132	to	133	0.95	0.95	to	0.96
42	5,507,969	77,846	73,643	141	140	to	142	1.06	1.05	to	1.06
43	2,656,173	42,981	37,237	162	160	to	163	1.15	1.14	to	1.17
51	2,034,014	28,103	30,192	138	137	to	140	0.93	0.92	to	0.94
52	3,562,522	44,853	53,539	126	125	to	127	0.84	0.83	to	0.84
53	1,551,472	17,162	23,369	111	109	to	112	0.73	0.73	to	0.74
Urban [8]	57,197,712	858,214	856,415	150	150	to	150	1.00	1.00	to	1.00
Not [9]	36,611,256	504,685	508,375	138	137	to	138	0.99	0.99	to	1.00

Notes:
1. “Injury” defined as any diagnosis in the range ICD9:800–999
2. Injuries occurring during the observation period 1987-Jan-01 to 2010-Dec-31.
3. Person-years is the sum of annual population counts during the observation period.
4. Observed number of injuries.
5. Expected number, indirectly standardized, based on age- and gender-specific rates in total population of BC.
6. Crude Rate per 10,000 person-years.
7. Standardized Relative Risk (compared to the total population of BC) = Observed/Expected.
8. Urban: aggregation of HSDAs 22, 23, 31, 32, 33 and 41, where > 62.3% of the HSDA population live in a large population centre.
9. Not urban: aggregation of HSDAs 11, 12, 13, 14, 21, 42, 43, 51, 52, 53.

ISSN: 1471-2458