Higher mortality risk among injured individuals in a population-based matched cohort study

BMC Public Health

Table 3 Mortality rate ratios by cause of death for injury-related hospitalisations of individuals aged 18+ years and matched non-injured comparison cohort within the 12 months post the index injury date, linked hospitalisation and mortality data in Australia

Cause of death^a	Injured No. deaths	Non-injured No. deaths	Unadjusted mortality rate ratio	95%CI	Adjusted mortality rate ratio^b	95%CI	Adjusted attributable risk%^b
Underlying and/or antecedent cause of death^c
Injuries	2548	166	93.69*	64.12–136.89	81.06*	51.87–126.67	99
Cardiovascular disease	5926	537	25.62*	22.43–29.26	18.35*	15.88–21.22	95
Cerebrovascular disease	1887	159	26.70*	21.00–33.95	22.51*	16.87–30.05	96
Respiratory infections	1487	133	27.98*	21.22–36.89	21.04*	15.48–28.60	95
Non-respiratory infections	1079	87	30.20*	21.57–42.29	20.43*	14.22–29.38	95
Malignant neoplasms	2082	161	26.91*	21.41–33.84	16.16*	12.63–20.68	94
Non-infectious respiratory diseases	2535	204	30.25*	24.28–37.69	19.49*	15.42–24.65	95
All other deaths	735	43	40.16*	25.16–64.11	50.68*	24.77–103.72	98

*p < 0.0001
^aCause of death was not able to be provided for n = 40 individuals in NSW. ^bAdjusted for age group, sex, urban status, number of Charlson comorbidities (i.e. 0, 1–2 or ≥3), alcohol use and dependence, mental health conditions, drug-related dependence and the log of pre-injury cumulative hospital LOS. ^cCause of death was not mutually exclusive

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