Skip to main content
. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: JAMA Psychiatry. 2015 Sep 1;72(9):917–926. doi: 10.1001/jamapsychiatry.2015.0987

Table 1.

Enlisted Soldiers: Multivariate Associations of Socio-demographic Characteristics with Suicide Attempts in the Army STARRS 2004–2009 Historical Administrative Data Study (HADS) Sample (n = 163,178).1

OR 95% CI Cases (N) Total (N)2 Rate3 Pop %4 SR5
Gender
 Male 1.0 – 7,214 26,507,814 326.6 86.3 322.3
 Female 2.4* 2.26–2.48 2,436 4,207,436 694.8 13.7 758.7
  χ21 1,266.6*
Age at Army Entry
 < 21 0.7* 0.68–0.76 6,471 19,095,671 406.6 62.2 330.3
 21–24 1.0 – 2,139 7,531,739 340.8 24.5 460.8
 25+ 1.6* 1.51–1.79 1,040 4,087,840 305.3 13.3 762.3
  χ22 392.9*
Current Age
 < 21 5.6* 5.06–6.23 3,315 4,624,915 860.1 15.1 927.1
 21–24 2.9* 2.61–3.17 3,499 9,230,699 454.9 30.1 478.3
 25–29 1.6* 1.50–1.80 1,756 7,119,756 296.0 23.2 275.6
 30–34 1.0 – 635 4,239,435 179.7 13.8 165.7
 35–39 0.7* 0.58–0.76 300 3,344,500 107.6 10.9 111.7
 40+ 0.5* 0.40–0.57 145 2,155,945 80.7 7.0 79.8
  χ25 1,832.5*
Race/Ethnicity
 White 1.0 – 6,808 18,358,008 445.0 59.8 424.3
 Black 0.7* 0.63–0.71 1,415 6,972,415 243.5 22.7 281.3
 Hispanic 0.7* 0.69–0.79 979 3,557,179 330.3 11.6 313.9
 Asian 0.7* 0.60–0.76 286 1,217,486 281.9 4.0 286.3
 Other 1.0 0.83–1.13 162 610,162 318.6 2.0 400.9
 χ24 245.4*
Education
 < High School6 2.0* 1.96–2.14 2,888 3,878,088 893.6 12.6 693.3
 High School 1.0 – 6,380 23,503,980 325.7 76.5 324.8
 Some College 0.7* 0.62–0.83 191 1,704,591 134.5 5.5 237.1
 ≥ College 0.6* 0.52–0.70 191 1,628,591 140.7 5.3 194.9
  χ23 1,076.7*
Marital Status
 Never Married 1.0 0.95–1.04 5,441 12,589,441 518.6 41.0 373.1
 Currently Married 1.0 – 3,974 16,814,774 283.6 54.7 384.1
 Previously Married 0.9 0.81–1.05 235 1,311,035 215.1 4.3 351.3
  χ22 1.6
Total – – 9,650 30,715,250 377.0 100 –
1

The sample of enlisted soldiers is a subset of the total sample (n = 193,617 person-months) that includes all Regular Army soldiers (i.e., excluding those in the U.S. Army National Guard and Army Reserve) with a suicide attempt in their administrative records during the years 2004–2009, plus a 1:200 stratified probability sample of all other active duty Regular Army person-months in the population exclusive of soldiers with a suicide attempt or other non-fatal suicidal event (e.g., suicidal ideation) and person-months associated with death (i.e., suicides, combat deaths, homicides, and deaths due to other injuries or illnesses). All records in the 1:200 sample were assigned a weight of 200 to adjust for the under-sampling of months not associated with suicide attempt. The analysis included a dummy predictor variable for calendar month and year to control for secular trends.

2

Total includes both cases (i.e., soldiers with a suicide attempt) and control person-months.

3

Rate 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 (n=3.08 million).

4

Pop % = Population percent.

5

SR = Standardized rate.

6

< 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.