A phone survey flagged three in four suicide attempts a week early.
Harvard researchers followed 619 patients at high risk after a psychiatric hospital stay. A model reading their short daily phone surveys caught 74 percent of attempts a week ahead. Most alerts were false alarms, so the method needs clinicians rather than automation.
Why it mattersDoctors have never had a dependable way to tell who is at risk this week. Even a rough warning gives a family or a clinic time to check in.
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