Temporal reciprocal relationships among anxiety, depression, and posttraumatic stress disorder for family surrogates from intensive care units over their first two bereavement years.

Different patterns of temporal relationships among symptoms of anxiety, depression, and PTSD over the first 2 bereavement years present important opportunities to target symptoms of specific psychological distress at different points during bereavement to prevent the onset, exacerbation, or maintenance of subsequent psychological distress.