The cohort included all NCS-R participants who had had a DSM-IV Axis I disorder at some point in their lives as well as a subsample of the rest of the NCS-R participants.

• 这一群体包括所有在生活史的某时有DSM-IV轴一障碍的NCS-R参与者，以及剩余NCS-R参与者的子样本。