Suicide attempts among activated soldiers in the U.S. Army reserve components

BMC Psychiatry

Table 1 Multivariable associations of socio-demographic characteristics with suicide attempt among activated enlisted soldiers in the U.S. Army reserve components^a

	OR	(95% CI)	Cases (N)	Total (N)^b	Rate^c	Pop %^d	SRE^e
Gender
Male	1.0	–	713	9,951,713	86	84.5	86
Female	2.6*	(2.2–2.9)	343	1,828,343	225	15.5	221
χ²₁	188.4*
Age at Army Entry (years)
< 21	0.6*	(0.5–0.7)	748	8,657,748	104	73.5	93
21–24	1.0	–	189	1,937,989	117	16.4	157
≥ 25	1.3*	(1.0–1.6)	119	1,184,319	121	10.1	203
χ²₂	60.7*
Current Age (years)
< 21	3.9*	(3.0–5.1)	354	1,805,754	235	15.3	293
21–24	1.9*	(1.4–2.4)	225	2,180,025	124	18.5	137
25–29	1.4*	(1.1–1.8)	184	1,969,584	112	16.7	105
30–34	1.0	–	101	1,458,301	83	12.4	73
35–39	0.8	(0.6–1.1)	85	1,622,885	63	13.8	59
≥ 40	0.6*	(0.5–0.8)	107	2,743,507	47	23.3	45
χ²₅	220.1*
Race/Ethnicity
White	1.0	–	752	7,954,552	113	67.5	116
Black	0.8*	(0.7–1.0)	163	2,065,363	95	17.5	93
Hispanic	0.8	(0.7–1.0)	98	1,144,298	103	9.7	97
Asian	0.5*	(0.3–0.7)	19	403,819	57	3.4	53
Other	1.2	(0.8–1.8)	24	212,024	136	1.8	136
χ²₄	18.8*
Education
< High School^f	1.2*	(1.1–1.4)	276	1,832,476	181	15.6	132
High School	1.0	–	688	7,961,288	104	67.6	106
Some College	0.9	(0.6–1.2)	42	706,842	71	6.0	93
≥ College	0.6*	(0.4–0.8)	50	1,279,450	47	10.9	63
χ²₃	20.3*
Marital Status
Never Married	1.0	–	620	5,846,020	127	49.6	92
Currently Married	1.5*	(1.3–1.8)	397	5,392,597	88	45.8	142
Previously Married	1.4	(1.0–2.0)	39	541,439	86	4.6	132
χ²₂	29.8*
Total	–	–	1056	11,780,056	108	100.0	–

^aThe sample of activated Reserve Component enlisted soldiers (n = 1056 cases, 58,895 control person-months) is a subset of the total Reserve Component sample (n = 70,970 person-months) from the Army STARRS Historical Administrative Data Study (HADS). All control person-months were assigned a weight of 200 to adjust for under-sampling. The analysis included a dummy predictor variable for calendar month and year to control for secular trends
^bTotal includes both cases (i.e., suicide attempters) and weighted control person-months
^cRate per 100,000 person-years, calculated based on n₁/n₂, where n₁ is the unique number of soldiers within each category and n₂ is the annual number of person-years, not person-months, in the population
^dPop % Percentage of the activated Reserve Component enlisted population
^eSRE Standardized risk estimate (suicide attempters per 100,000 person-years) was calculated assuming other predictors were at their sample-wide means
^f< High School includes: General Educational Development credential (GED), home study diploma, occupational program certificate, correspondence school diploma, high school certificate of attendance, adult education diploma, and other non-traditional high school credentials
*p < 0.05

ISSN: 1471-244X