RT Book, Section A1 Bromet, Evelyn J. A2 Wallace, Robert B. SR Print(0) ID 1141961640 T1 Psychiatric Disorders T2 Maxcy-Rosenau-Last Public Health and Preventive Medicine, 15e YR 2017 FD 2017 PB McGraw-Hill Medical PP New York, NY SN 9780071441988 LK accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141961640 RD 2024/04/20 AB Psychiatric disorders occur in every socioeconomic, racial, and cultural group in the world and are among the top 10 contributors to the global burden of disease.1 In the United States, 8–18% of children and adolescents and 26% of adults recently experienced a psychiatric or substance use disorder.2,3 Alzheimer's disease is found in 8–15% of people over age 65.4 In the last several decades, a great deal has been learned about the distribution of psychiatric and substance use disorders in the population, their familial, biologic, social, and psychologic risk factors, illness course and prognosis, and the socioeconomic costs of these disorders.