if both depression onset and trauma occurred " in childhood , "
the relative order could not be determined . Likewise , because depression chronology and trauma history were probed separately , events that occurred at the same age or occurred were not assigned a relative order , and such traumas were captured only under the lifetime trauma category . Twenty - nine patients had trauma history that could not be established as occurring before or after depression onset and therefore were included in analyses of lifetime trauma but not of onset - relative trauma .