Table 2.
Means and standard deviations of Automated Neuropsychological Assessment Metrics (ANAM) throughput scores among Regular Army enlisted suicide attempters, ideators, and decedents versus controls.1,2
| Cases | ||||||||
|---|---|---|---|---|---|---|---|---|
| Controls (N = 9,893) |
Suicide Attempters (N = 607) |
Suicide Ideators (N = 955) |
Suicide Decedents (N = 57) |
|||||
| ANAM Tests | M | (SD) | M | (SD) | M | (SD) | M | (SD) |
| Code Substitution–Learning (CDS) | 53.3 | (11.1) | 52.1 | (11.7) | 51.5 | (11.8) | 50.6 | (11.8) |
| Procedural Reaction Time (PRO) | 100.6 | (14.3) | 98.1 | (15.5) | 97.9 | (15.8) | 97.0 | (17.1) |
| Mathematical Processing (MTH) | 20.5 | (6.1) | 19.2 | (5.9) | 19.2 | (6.3) | 18.3 | (6.0) |
| Matching to Sample (M2S) | 35.3 | (10.8) | 33.7 | (10.6) | 34.1 | (10.8) | 33.1 | (9.8) |
| Code Substitution–Delayed (CDD) | 47.2 | (15.5) | 46.5 | (15.4) | 46.3 | (15.3) | 42.5 | (15.0) |
Case-control sample includes enlisted Regular Army enlisted soldiers (i.e., excluding officers and members of the U.S. Army National Guard and Army Reserve) on active duty during the years 2004–2009. Cases are the subset of soldiers who completed neurocognitive testing prior to their first administratively documented suicide attempt. Controls are soldiers who completed the neurocognitive testing prior to their sampled person-month record, representing a subset of a 1:200 stratified probability sample of all active duty Regular Army person-months in the population, exclusive of soldiers with a non-fatal suicidal behavior and all person-months involving a death (i.e., due to suicide, combat, homicide, injury, or illness). All records in the 1:200 control sample were assigned a weight of 200 to adjust for the under-sampling of months not associated with a suicidal behavior.