Suicide in the U.S. Army: epidemiological and periodic aspects.

An overview of suicide in the U.S. Army is presented in two sections: (1) the epidemiology of U.S. Army suicides, based on biennium reports, and (2) the temporal aspects of those suicides compared with the data for the United States as a whole. A brief historical review documents some of the changes in contemporary military suicide rates compared to those of the past century. The cycles in the number of suicides by day of the week, day of the month, and the month of the year for the U.S. Army are computed and contrasted with those reported for the U.S. resident population.