Table 2.

Multivariate Survival Models of Suicide After a Traumatic Brain Injury, Quebec, Canada, 1987–2008

Predictor	HRa	95% CI	P Value
TBI
Yes	2.41	1.91, 3.02	<0.001
No	1.00	Referent	Referent
Probable TBI
Yes	1.22	1.02, 1.47	0.032
No	1.00	Referent	Referent
Musculoskeletal injury
Yes	1.48	1.23, 1.78	<0.001
No	1.00	Referent	Referent
Sex
Male	4.82	3.69, 6.29	<0.001
Female	1.00	Referent	Referent
Age at inclusion, years
0–5	1.00	Referent	Referent
6–11	1.96	1.50, 2.58	<0.001
12–17	2.69	2.01, 3.60	<0.001
Mental disorders before first TBI
Yes	3.88	3.20, 4.71	<0.001
No	1.00	Referent	Referent

Abbreviations: CI, confidence interval; HR, hazard ratio; TBI, traumatic brain injury.

^a Adjusted for demographic characteristics, mental disorders, and other injuries.