Althou"Ir studies of suicidcs among Navy* prs6nnel *1 h' cn cducted in the-p p " f is mhi not "ecni as consistent or as comprehensive as the biennial surveys of suicide among Army periml conductcd by the Division of Ncuropsychialry at Walter Rccd Army Institute of Research. A comparable program of research among Navy personnel would help to resolve some major issues.For instance, studies of the incidence of completed suicide and destructive behavior in the Navy have bccn limited by the lack of comprehensive data on population at risk.Obiective \'The two objectives in this paper were first, to identify potential demographic and service-related risk factors associated with completed suicides among enlisted Navy personnel during a 12-year period, 1974 to 1985, and, second, to examine the severity of rates of completed suicide in the U.S. Navy relative to similar rates in the United States general population and determine the extent to which patterns of completed suicide in the two populations were similar to, or different from, one another.Cases of completed suicid-, among U.S. Navy enlisted personnel occurring during I January 1974 to 31 December 1985 were identified from a computerized Enlisted Service History File edited and maintained by the Naval Health Research Center (NHRC) in San Diego, California. The case selection criteria were the presence of both a code of 952 (died) in the last event and a code of 890 (suicide) in the Department of Defense Loss Code. The Enlisted Service History File also was u .ilizcd to calculate the person years at risk during the study period for all active-duty enlisted -personnel.. .Age-specific. and. age-adjutted'Ifi Ortality rates were calculated, for, the study population. (5,657,150 person years). Data for the total United States were obtained from the Statistial Abstracts of the United States. Variables analyzed in this study included age, sex, race, occupation, and year dicd. Occupational classifications were grouped into five categories based on similarity of assigned tasks and work environment.
ResultsDuring the years 1974 through 1985, there was a total of 373 confirmed suicides for an average of 32 cases per year based on the criteria described above. The suicide rate was 6.59 per 100,000 person-years. Even though 80 percent of suicides were under the age of 30 years, no consistent association between age and suicide was observed. The Navy suicide rates were lower than in the U.S., but, from 1977 to 1983, the Navy suicide rates in the 17 to 24 age group have been showing a trend toward increasing while the U.S. rates appear to be stabilizing or even slightly decreasing.Female suicide rates are significantly lower (50%) than that found in males. The rates of white suicides tended to be higher than for nonwhites, but the differences were not significant. In the U.S. population, whites have a significantly higher suicide rate than blacks. Age-related suicide risk among men in the Navy and in the U.S. population appear to differ by race. Only four of the 109 specific occup...