Table 3

Suicide risk within 1 year after dementia diagnosis by other mental disorders

Model	Variables	Study participants, n	Person-years, n	Suicides, n	Suicide deaths per 100000 person-years, n	HR (95% CI)^*	p value
1	Patients without dementia	36 541	139 460	18	12.9	1.00
	Patients with dementia but without other mental disorders	19 065	55 550	18	32.4	1.96 (1.02–3.77)	0.044
	Patients with dementia and other mental disorders	17 430	56 994	28	49.1	3.22 (1.78–5.83)	< 0.001
2	Patients without dementia	36 541	139 460	18	12.9	1.00
	Patients with dementia but without other mental disorders	19 065	55 550	18	32.4	1.96 (1.02–3.77)	0.044
	Patients diagnosed with other mental disorders before dementia^†	13 389	40 421	25	61.8	3.77 (2.05–6.91)	< 0.001
	Patients diagnosed with other mental disorders after dementia	4069	16 573	3	18.1	1.46 (0.43–4.97)	0.54

CI = confidence interval; HR = hazard ratio.
↵* Estimated after adjusting for household income, insurance type, residential area, disability and other mental disorders.
↵† A history of any other mental disorder after Jan. 1, 2002.