The patients completed a 4-page questionnaire about symptoms of anxiety, their ability to function in daily life, the number of days when they were disabled, and the number of visits to the doctor. Within 1 week, each person was interviewed by a mental health professional to find out whether the patient had an anxiety disorder. The interviewer inquired about symptoms of 4 types of anxiety disorders: generalized anxiety disorder, panic disorder, social anxiety disorder, and posttraumatic stress disorder.