More than 8% of soldiers had thought about killing themselves and 1.1% had a past suicide attempt, researchers found from confidential surveys and interviews with 5,428 soldiers at Army installations across the country.

The findings, published online Monday in two papers in JAMA Psychiatry, point to a weakness in the recruiting process, experts said. Applicants are asked about their psychiatric histories, and those with certain disorders or past suicide attempts are generally barred from service.