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Epidemiologic studies of suicide in the military have not controlled for the higher suicide rates of the unemployed expected in comparative national populations. This study compared the observed number of suicides among U.S. Marine Corps personnel from 1990 to 1996 with the expected number based on rates for the employed general U.S. population. Standardized mortality ratios were calculated to identify demographic groups with higher or lower than expected numbers of suicides. The scan statistic and the Knox technique were used to evaluate potential suicide cluster patterns. Overall, there were fewer suicides in the Marine Corps (n = 213) than expected (n = 225). Hispanic and other ethnic group males and female Marines had greater than expected numbers. Evidence for suicide clustering in time and space was equivocal.

This paper examines disease and non-battle injuries among U.S. 'Tihe role of the medical commands of the armed services Marines stationed in Vietnam between 1965 and 1972. Comput-T is to support the operating forces and requires the proerized records were searched for all hospital admissions among vision of early effective care to the sick, injured, and male U.S. Marines throughout the world during the study period, wounded; return of recuperated patients to duty; prompt and and rates of first hospitalization for Marines stationed in Vietnam orderly evacuation of casualties; and technical measures that were compared with rates of Marines stationed elsewhere. In all but two diagnostic categories, the risk of first hospitalizations safeguard the health of military personnel. During wartime, among U.S. Marines stationed in Vietnam was significantly higher the major focus of these commands is on the care and treatthan it was for Marines stationed elsewhere. This was particularly ment of patients wounded in battle. However. diseases and true for infective and parasitic diseases, and symptoms and ill-de-non-battle injuries (DNBIs) also represent a significant loss fined conditions. of manpower during military conflicts. Hoeffler and Melton,' for instance, report that during the last four major mil-From the Occupational Medicine Department, Naval Health Research itary conflicts involving U.S. military personnel (World Wars

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