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Health Dictionary

Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.

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Schizophrenia epidemiology and demographics

Introduction

Overview

Overview

  • The prevalence of schizophrenia is 300 to 700 per 100,000 (0.3%-0.7%) of the overall population.[1]
  • It occurs 1.4 times more frequently in males than females and typically appears earlier in men[14]—the peak ages of onset are 25 years for males and 27 years for females.[174]
  • Onset in childhood is much rarer, as is onset in middle or old age.[175][176]
  • Despite the prior belief that schizophrenia occurs at similar rates worldwide, its frequency varies across the world, within countries, and at the local and neighborhood level.[5][177][178][179]
  • This variation has been estimated to be fivefold.[4]
  • It causes approximately one percent of worldwide disability adjusted life years and resulted in 20,000 deaths in 2010.[180]
  • The rate of schizophrenia varies up to threefold depending on how it is defined.[9][14]
  • In 2000, the World Health Organization found the percentage of people affected and the number of new cases that develop each year is roughly similar around the world, with age-standardized prevalence per 100,000 ranging from 343 in Africa to 544 in Japan and Oceania for men, and from 378 in Africa to 527 in Southeastern Europe for women.[181]
  • About 1.1% of adults have schizophrenia in the United States.
References

References

  1. ↑ Diagnostic and statistical manual of mental disorders : DSM-5. Washington, D.C: American Psychiatric Association. 2013. ISBN 0890425558.

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Vindhya BellamKonda, M.B.B.S [2] Irfan Dotani