Table 2.
Univariable and Multivariable Associations of Mental Health Diagnosis and Time in Deployment with Suicide Attempt Among Deployed Enlisted Soldiers in the U.S. Army Reserve Components.1
| Univariable Analyses2 | Multivariable Analyses3 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| OR | (95% CI) | aOR | (95% CI) | Cases (N) | Total (N)4 | Rate5 | Pop %6 | SRE7 | |
| I. Time Since Most Recent Mental Health Diagnosis | |||||||||
| No Diagnosis | 1.0 | – | 1.0 | – | 136 | 3,112,736 | 52.4 | 91.7 | 52 |
| 1 Month | 27.4* | (19.4–38.6) | 24.7* | (17.4–35.0) | 46 | 35,246 | 1566.1 | 1.0 | 1,290 |
| 2–3 Months | 8.2* | (5.0–13.5) | 7.9* | (4.8–13.0) | 18 | 43,418 | 497.5 | 1.3 | 414 |
| 4–12 Months | 5.1* | (3.2–8.1) | 5.3* | (3.3–8.4) | 21 | 85,821 | 293.6 | 2.5 | 275 |
| ≥ 13 Months | 1.6 | (0.8–3.2) | 2.2* | (1.1–4.5) | 9 | 116,409 | 92.8 | 3.4 | 117 |
| χ24 | 394.2* | 353.4* | |||||||
|
II. Time in Deployment | |||||||||
| 1–3 Months | 1.0 | – | 1.0 | – | 50 | 964,850 | 62.2 | 28.4 | 61 |
| 4–6 Months | 1.7* | (1.2–2.4) | 1.7* | (1.2–2.5) | 82 | 867,082 | 113.5 | 25.6 | 106 |
| 7–9 Months | 1.4 | (0.9–2.0) | 1.5 | (1.0–2.1) | 55 | 749,655 | 88.0 | 22.1 | 89 |
| ≥ 10 Months | 1.0 | (0.7–1.6) | 1.2 | (0.8–1.8) | 43 | 812,043 | 63.5 | 23.9 | 70 |
| χ23 | 12.7* | 11.0* | |||||||
Abbreviations: OR= Odds ratio, CI= Confidence Interval, aOR = adjusted odds ratio, SRE = standardized risk estimate
The sample of deployed Reserve Component enlisted soldiers (n=230 cases, 16,967 control person-months) is a subset of the total Reserve Component sample (n=70,970 person-months) from the Army Study to Assess Risk and Resilience in Servicemembers Historical Administrative Data Study.
Parameter estimates from weighted univariable analyses (i.e., each variable modeled separately with suicide attempt)
Time since most recent mental health diagnosis and time in current deployment were examined in separate models that controlled for basic socio-demographic variables (gender, age at entry into the Army, current age, race, education, and marital status) and active time in service. All analyses also included a dummy predictor variable for calendar month and year to control for secular trends.
Total includes both cases (i.e., suicide attempters) and weighted control person-months.
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.
Pop% = Percent of the currently deployed Reserve Component enlisted population.
SRE = Standardized risk estimate (suicide attempters per 100,000 person-years) calculated assuming other predictors were at their sample-wide means.
p<0.05