CHICAGO (AP) — A big Army study says war-time suicide attempts are most common in newer enlisted soldiers who have not been deployed.

Officers are less likely to try to end their lives. And at both levels, attempts are more common among women and those without a high school diploma.

The study analyzed records on nearly 10,000 suicide attempts among almost 1 million active-duty Army members during the wars in Afghanistan and Iraq, from 2004 to 2009. Rates increased during that time.

Military suicides have gotten the most attention, but attempts are more prevalent and sometimes have different contributing factors.

The study was published Wednesday in the journal JAMA Psychiatry.