Analysis of the risk and risk factors for injury in people with and without dementia: a 14-year, retrospective, matched cohort study

Table 3 Risk factors for injury using Cox regression

Variables	Crude HR	95% CI	95% CI	p value	Adjusted HR	95% CI	95% CI	p value
Dementia
People without dementia	Reference				Reference
People with dementia	1.083	1.066	1.101	< 0.001	1.070	1.052	1.087	< 0.001
Dementia subtype
Without	Reference				Reference
Alzheimer disease	1.109	1.088	1.129	< 0.001	1.104	1.084	1.125	< 0.001
Vascular dementia	1.081	0.959	1.218	0.201	1.057	0.938	1.191	0.364
Other dementia	1.007	0.976	1.039	0.674	1.001	0.940	1.024	0.062
Gender
Male	Reference				Reference
Female	1.080	1.066	1.095	< 0.001	1.100	1.086	1.115	< 0.001
Age group (years)
50–64	Reference				Reference
65–74	1.050	1.021	1.079	0.001	1.058	1.029	1.088	< 0.001
75–84	0.877	0.856	0.899	< 0.001	0.864	0.843	0.886	< 0.001
≧85	0.658	0.641	0.675	< 0.001	0.630	0.614	0.647	< 0.001
Catastrophic illness
Without	Reference				Reference
With	0.788	0.775	0.802	< 0.001	0.785	0.771	0.799	< 0.001
Injury outpatient / ER 1 year before index date
Without	Reference				Reference
With	1.267	1.250	1.284	< 0.001	1.241	1.224	1.258	< 0.001

Adjusted for comorbidities (diabetes mellitus, hypertension, hyperlipidemia, cerebrovascular disease, chronic kidney disease, alcohol-related disease)
CI confidence interval, ER emergency room, HR hazard ratio

ISSN: 1758-9193