Table 2.

Association of psychiatric diagnoses of active-duty Regular U.S. Army enlisted soldiers with documented suicide attempt within 30 days following initial major depression diagnosis

		Univariable			Multivariablec		Soldiers with Major Depression Diagnosis with No SI				Total population (n = 101,046)
							Attempt suicide within 30 daysa (n = 421)		Did not attempt suicide within 30 daysb (n = 100,625)
	χ²	ORd	(95% CId)	χ²	OR	(95% CI)	n	%	n	%	%
Psychiatric Diagnosis
Adjustment Disorder (Day of depression diagnosis)
Yes		2.1*	(1.4–3.1)		1.6*	(1.1–2.4)	26	6.2	3,119	3.1	3.1
No		1.0	–		1.0	–	395	93.8	97,506	96.9	96.9
	12.57*			5.39*
Alcohol Use Disorder (Day of depression diagnosis)
Yes		1.9*	(1.3–2.6)		1.7*	(1.2–2.4)	40	9.5	5,380	5.3	5.4
No		1.0	–		1.0	–	381	90.5	95,245	94.7	94.6
	13.94*			10.36*
Alcohol Use Disorder (Prior to depression diagnosis)
Yes		1.4*	(1.1–1.8)		1.5*	(1.2–2.0)	74	17.6	13,461	13.4	13.4
No		1.0	–		1.0	–	347	82.4	87,164	86.6	86.6
	6.41*			9.85*
Anxiety Disorders (Day of depression diagnosis)
Yes		1.3*	(1.0–1.7)		1.4*	(1.1–1.7)	93	22.1	17,992	17.9	17.9
No		1.0	–		1.0	–	328	77.9	82,633	82.1	82.1
	5.21*			6.50*
Anxiety Disorders (Prior to depression diagnosis)
Yes		0.7*	(0.6–0.9)		1.0	(0.8–1.2)	142	33.7	41,470	41.2	41.2
No		1.0	–		1.0	–	279	66.3	59,155	58.8	58.8
	9.24*			0.00
Bipolar Disorder (Day of depression diagnosis)
Yes		7.1*	(3.6–13.8)		5.3*	(2.7–10.4)	9	2.1	307	0.3	0.3
No		1.0	–		1.0	–	412	97.9	100,318	99.7	99.7
	32.71*			23.43*
Dysthymic Disorder/Neurasthesia/ Depression NOS (Day of depression diagnosis)
Yes		2.4*	(1.7–3.4)		1.8*	(1.3–2.5)	38	9.0	3,950	3.9	3.9
No		1.0	–		1.0	–	383	91.0	96,675	96.1	96.1
	26.87*			11.90*
Stressors/Adversities & Marital Problems (Day of depression diagnosis)
Yes		1.4*	(1.0–1.8)		1.3*	(1.0–1.8)	60	14.3	10,831	10.8	10.8
No		1.0	–		1.0	–	361	85.7	89,794	89.2	89.2
	5.32*			4.36*
Stressors/Adversities & Marital Problems (Prior to depression diagnosis)
Yes		0.7*	(0.6–0.8)		1.0	(0.8–1.2)	157	37.3	46,943	46.7	46.6
No		1.0	–		1.0	–	264	62.7	53,682	53.3	53.4
	14.08*			0.01
Non-Affective Psychosis (Day of depression diagnosis)
Yes		3.5*	(1.8–6.7)		2.6*	(1.3–5.0)	9	0.2	633	0.6	0.6
No		1.0	–		1.0	–	412	97.9	99,992	99.4	99.4
	13.39*			7.60*
Other Diagnosis (Day of depression diagnosis)e
Yes		10.3*	(7.3–14.5)		7.0*	(4.9–9.9)	37e	8.8	932	0.9	1.0
No		1.0	–		1.0	–	384	91.2	99,693	99.1	99.0
	176.84*			118.47*
Personality Disorder (Day of depression diagnosis)
Yes		4.3*	(2.2–8.3)		3.2*	(1.7–6.3)	9	0.2	510	0.5	0.5
No		1.0	–		1.0	–	412	97.9	100,115	99.5	99.5
	18.28*			11.78*
Sexual Disorder (Prior to depression diagnosis)
Yes		0.2*	(0.1–0.5)		0.6	(0.2–1.5)	4	1.0	4,671	4.6	4.6
No		1.0	–		1.0	–	417	99.0	95,954	95.4	95.4
	10.38*			0.13
Sleep Disorder (Day of depression depression)
Yes		0.3*	(0.1–0.8)		0.4*	(0.1–1.0)	4	1.0	3,028	3.0	3.0
No		1.0	–		1.0	–	417	99.0	97,597	97.0	97.0
	5.49*			3.95*
Sleep Disorder (Prior to depression diagnosis)
Yes		0.7*	(0.6–1.0)		1.2	(0.9–1.6)	52	12.4	16,110	16.0	16.0
No		1.0	–		1.0	–	369	87.6	84,515	84.0	84.0
	4.05*			0.99
Somatoform/Dissociative Disorder (Prior to depression diagnosis)
Yes		1.1	(0.7–1.8)		1.7*	(1.0–2.8)	17	4.0	3,768	3.7	3.7
No		1.0	–		1.0	–	404	96.0	96,857	96.3	96.3
	0.10			4.60*
Tobacco Use Disorder (Day of depression diagnosis)
Yes		1.7*	(1.2–2.4)		1.7*	(1.2–2.3)	41	9.7	5,949	5.9	5.9
No		1.0	–		1.0	–	380	90.3	94,676	94.1	94.1
	10.82*			9.18*
Traumatic Stress (Day of depression diagnosis)
Yes		3.3*	(1.8–6.0)		2.9*	(1.6–5.2)	11	2.6	817	0.8	0.8
No		1.0	–		1.0	–	410	97.4	99,808	99.2	99.2
	14.76*			11.46*
PTSD (Prior to depression diagnosis)
Yes		0.7*	(0.5–0.9)		1.2	(0.9–1.7)	43	10.2	14,602	14.5	14.5
No		1.0	–		1.0	–	378	89.8	86,023	85.5	85.5
	6.05*			1.52
Drug Induced Mental Disorder (Day of depression diagnosis)
Yes		2.6*	(1.1–6.2)		2.0	(0.8–4.9)	5	1.2	467	0.5	0.5
No		1.0	–		1.0	–	416	98.8	100,158	99.5	99.5
	4.35*			2.30
Drug Induced Mental Disorder (Prior to depression diagnosis)
Yes		1.5	(0.9–2.5)		1.7*	(1.0–2.9)	16	3.8	2,512	2.5	2.5
No		1.0	–		1.0	–	405	96.2	98,113	97.5	97.5
	2.83			4.39*
Non-Dependent Drug Abuse (Day of depression diagnosis)
Yes		2.3*	(1.3–4.2)		1.6	(0.9–3.0)	11	2.6	1,152	1.1	1.2
No		1.0	–		1.0	–	410	97.4	99,473	98.9	98.8
	7.41*			2.50

^aCases: Soldiers with first-time documented major depression with no prior suicidal ideation who subsequently attempted suicide within the next 30 days of recorded depression diagnosis

^bControls: Soldiers with first-time documented major depression with no prior suicidal ideation who did not subsequently attempt suicide within the next 30 days

^cEach variable was examined in a separate multivariable model that adjusted for socio-demographics (gender, current age, race, education, and marital status) and service-related characteristics (age at entry into Army service, time in service, deployment status, delayed promotion, demotion, and military occupation)

^dOR = Odds ratio; CI = Confidence interval

^eAmong soldiers who were diagnosed with a disorder classified as “Other,” 33/37 (89.2%) were identified by the ICD-9-CM code 300.9 (Unspecified nonpsychotic mental disorder)

*p < .05