Summary Table of Contents+. 1  Rule 3100. Compliance with Auditing and Related Professional Practice Standards. 2  Rule 3101. Certain Terms Used in Auditing and Related Professional Practice Standards. 3  Rule 3200. Auditing Standards. 4  Rule 3210. Amendments. 5  Rule 3211. Auditor Reporting of Certain Audit Participants. 6  Rule 3300T.
Age of onset of schizophrenia varies among people, but occurs in early adulthood for the vast majority of people--typically between the ages of 16 and 30. While schizophrenia affects men and women in equal numbers, symptoms tend to begin at a younger age for men.
-- The probability of developing schizophrenia as the offspring of one parent with the disease is approximately 13 percent. -- The probability of developing schizophrenia as the offspring of both parents with the disease is approximately 35 percent. Onset by Age -- Three-quarters of persons with schizophrenia develop the disease between 16 and 25 years of age. -- Onset is uncommon after age 30, and rare after age 40.