title: Prevalence of psychotic disorders in an urban area of France.
abstract: BACKGROUND
  Most data on the prevalence of psychotic disorders is limited to global estimates or restricted to schizophrenia. Consequently, there is limited information available about the prevalence of psychotic disorders more widely and outwith age and sex - specific prevalence values. The objective of this study is to provide period prevalence estimates, detailed by gender and age groups, for treated psychotic disorders in an adult population (aged 18 years and over) from an urban area in France.
  
  
  METHODS
  Prospective reporting of cases treated over an 8-week period complemented by several methods estimating the number of potentially missed cases, including a leakage study. The study took place in an urban, well defined catchment area, with a population of 67 430 at risk subjects living in the east of a Paris suburb.
  
  
  RESULTS
  The observed prevalence was of 3.72 per 1000 subjects at risk; after adjustment for potentially lost cases the estimate was of 4.60 per 1000 subjects at risk. Observed prevalence was higher in men (4.71 per 1000, Relative Risk = 1.68) and in the 35-45 age-band (6.05 per 1000, Relative Risk = 1.93).
  
  
  CONCLUSIONS
  Global prevalence estimates of psychotic disorders in this study are in line with expected values based on studies conducted in other countries. Careful consideration of the causes of missed cases and gathering of complementary data are essential and could result in significant changes in prevalence estimates. Detailed estimates (by age) suggest that treated psychosis might not be a lifelong condition.
authors: AP-HP, DHU PePSY, Groupe Hospitalier "Mondor", Pôle de Psychiatrie, Créteil, 94000, France. andrei.szoke@inserm.fr.|INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. andrei.szoke@inserm.fr.|UPEC, University Paris-Est, Faculté de médecine, Créteil, 94000, France. andrei.szoke@inserm.fr.|Fondation FondaMental, Créteil, 94000, France. andrei.szoke@inserm.fr.|Pôle de Psychiatrie, Hôpital "A. Chenevier", Pavillon Hartmann, 40, rue de Mesly, Créteil, 94000, France. andrei.szoke@inserm.fr.
authors: Andrei
authors: A
authors: Szöke
authors: AP-HP, DHU PePSY, Groupe Hospitalier "Mondor", Pôle de Psychiatrie, Créteil, 94000, France. gregoire.baudin@gmail.com.|INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. gregoire.baudin@gmail.com.|University François-Rabelais of Tours, PAV EA 2114, Tours, 37000, France. gregoire.baudin@gmail.com.
authors: Grégoire
authors: G
authors: Baudin
authors: AP-HP, DHU PePSY, Groupe Hospitalier "Mondor", Pôle de Psychiatrie, Créteil, 94000, France. saba.ghassen@wanadoo.fr.|INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. saba.ghassen@wanadoo.fr.
authors: Ghassen
authors: G
authors: Saba
authors: INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. baptistepignon@yahoo.fr.|Fondation FondaMental, Créteil, 94000, France. baptistepignon@yahoo.fr.|CHRU de Lille, Department of Psychiatry, Fontan Hospital, Lille, 59000, France. baptistepignon@yahoo.fr.
authors: Baptiste
authors: B
authors: Pignon
authors: INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. jean-romain.richard@inserm.fr.|Fondation FondaMental, Créteil, 94000, France. jean-romain.richard@inserm.fr.
authors: Jean-Romain
authors: JR
authors: Richard
authors: AP-HP, DHU PePSY, Groupe Hospitalier "Mondor", Pôle de Psychiatrie, Créteil, 94000, France. marion.leboyer@inserm.fr.|INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. marion.leboyer@inserm.fr.|UPEC, University Paris-Est, Faculté de médecine, Créteil, 94000, France. marion.leboyer@inserm.fr.|Fondation FondaMental, Créteil, 94000, France. marion.leboyer@inserm.fr.
authors: Marion
authors: M
authors: Leboyer
authors: AP-HP, DHU PePSY, Groupe Hospitalier "Mondor", Pôle de Psychiatrie, Créteil, 94000, France. franck.schurhoff@inserm.fr.|INSERM (French National Institute of Health and Medical Research), U955, team 15, Créteil, 94000, France. franck.schurhoff@inserm.fr.|UPEC, University Paris-Est, Faculté de médecine, Créteil, 94000, France. franck.schurhoff@inserm.fr.|Fondation FondaMental, Créteil, 94000, France. franck.schurhoff@inserm.fr.
authors: Franck
authors: F
authors: Schürhoff
mesh_terms: D000328:Adult; D017677:Age Distribution; D005260:Female; D005602:France / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011446:Prospective Studies; D011618:Psychotic Disorders / Q000453:epidemiology*; D012737:Sex Factors; D014505:Urban Population / Q000706:statistics & numerical data*; D055815:Young Adult