TABLE 2.

Relative Risk of Suicide in Association With Hospital-Diagnosed Dementia Among Adults Aged 50 Years and Over in Denmark (N = 2,474,767) During 1990–2000

	Men				Women
	Relative Riska	95% CI	N	(%)	Relative Riska	95% CI	N	(%)
Age
No dementia
50–69	1.0		2111	59.3	1.0		1227	57.3
70+	1.5b	[1.4–1.6]	1366	38.4	1.1b	[1.0–1.2]	859	40.1
Dementia
50–69	8.5b	[6.3–11.3]	47	1.3	10.8b	[7.4–15.7]	28	1.3
70+	4.7b	[3.4–6.7]	33	0.9	3.4b	[2.4–5.0]	28	1.3
Marital statusc
No dementia
Never married	2.0b	[1.8–2.3]	423	11.9	1.5b	[1.3–1.8]	144	6.7
Married	1.0		1787	50.2	1.0		803	37.5
Divorced	2.3b	[2.1–2.5]	590	16.6	2.2b	[1.9–2.5]	371	17.3
Widowed	2.4b	[2.2–2.6]	677	19.0	1.7b	[1.5–1.9]	768	35.9
Dementia
Never married	8.2b	[4.4–15.2]	10	0.3	3.7d	[1.2–11.5]	3	0.1
Married	7.2b	[5.3–9.8]	43	1.2	10.8b	[7.1–16.4]	23	1.1
Divorced	7.4b	[4.4–12.2]	15	0.4	9.2b	[5.1–16.7]	11	0.5
Widowed	4.8b	[2.7–8.5]	12	0.3	4.6b	[2.9–7.2]	19	0.9
Living statuse
No dementia
Living with someone	1.0		1809	50.9	1.0		770	35.9
Living alone	1.8b	[1.6–1.8]	1668	46.9	2.0b	[1.7–2.3]	1316	61.4
Dementia
Living with someone	8.8b	[6.1–12.6]	38	1.1	7.2b	[3.6–14.4]	18	0.8
Living alone	3.6b	[2.3–5.5]	42	1.2	6.5b	[4.4–9.6]	38	1.8
Presence of chronic comorbidityf
No dementia
No chronic comorbidity	1.0		2477	69.6	1.0		1580	73.8
Chronic comorbidity	1.9b	[1.7–2.0]	1000	28.1	1.8b	[1.6–2.0]	506	23.6
Dementia
No chronic comorbidity	4.9b	[3.7–6.3]	55	1.5	4.5b	[3.3–6.2]	38	1.8
Chronic comorbidity	4.2b	[2.9–6.3]	25	0.7	5.4b	[3.4–8.6]	18	0.8
Time since first diagnosis of dementiag
No dementia	1.0		3477	97.8	1.0		2086	97.4
Dementia diagnosed
Within last 6 months	13.5b	[9.1–20.2]	24	0.7	13.7b	[8.5–22.1]	13	0.6
Within last 6 months to 5 years	2.8b	[2.0–3.9]	33	0.9	3.2b	[2.1–4.9]	26	1.2
More than 5 years ago	3.0b	[2.0–4.5]	23	0.6	4.9b	[2.9–8.1]	17	0.8
Main versus subdiagnosisg
No dementia	1.0		3477	97.8	1.0		2086	97.4
Dementia
Main diagnosis	3.7b	[2.7–5.0]	40	1.1	5.3b	[3.7–7.5]	32	1.5
Subdiagnosis	3.3b	[2.4–4.6]	40	1.1	2.8b	[1.8–4.1]	24	1.1
Subtypes of dementiag
No dementia	1.0		3477	97.8	1.0		2086	97.4
Dementia
Alzheimer disease	4.4b	[2.9–6.5]	24	0.7	8.9b	[5.5–14.3]	19	0.9
Vascular dementia	2.1d	[1.3–3.5]	16	0.4	2.4b	[1.5–3.8]	18	0.8
Other or unspecified types of dementia	5.4b	[4.0–7.4]	40	1.1	5.0b	[3.2–7.7]	19	0.9
Current psychiatric hospitalizationg
No dementia
Not admitted	1.0		3375	94.9	1.0		1964	91.7
Admitted	43.5b	[35.8–52.7]	102	2.9	65.3b	[54.4–78.5]	122	5.7
Dementia
Not admitted	3.2b	[2.6–4.1]	68	1.9	3.8b	[2.9–5.0]	50	2.3
Admitted	11.8b	[6.7–20.9]	12	0.3	11.3b	[5.1–25.2]	6	0.3
Presence of other psychiatric disordersg
No dementia
No other disorders	1.0		2876	80.9	1.0		1426	66.6
Other disorders	12.6b	[11.5–13.7]	601	16.9	19.4b	[17.6–21.4]	660	30.8
Dementia
No other disorders	2.0d	[1.2–3.2]	16	0.4	1.7	[0.9–3.2]	9	0.4
Other disorders	8.1b	[6.3–10.3]	64	1.8	12.0b	[9.0–16.1]	47	2.2
Presence of mood disordersg
No dementia
No mood disorders	1.0		3134	88.1	1.0		1660	77.5
Mood disorders	14.4b	[12.9–16.1]	343	9.6	18.8b	[16.9–20.9]	426	19.9
Dementia
No mood disorders	2.8b	[2.0–3.8]	39	1.1	3.3b	[2.2–4.8]	27	1.3
Mood disorders	10.8b	[8.0–14.7]	41	1.2	12.2b	[8.5–17.7]	29	1.4
Total			3557	100.0			2142	100.0

Notes: Reference groups are given in bold.

^aAsymptotic two-sided p values were calculated using t tests with df >2,000,000.

^bSignificance level of 0.001.

^cModel controlled for calendar year and current age.

^dSignificance level of 0.01.

^eModel controlled for calendar year, current age, and current marital status.

^fModel controlled for calendar year, current age, current marital status, and living status.

^gModel controlled for calendar year, current age, current marital status, living status and history of chronic disorders.