Urbanicity and risk of first-episode psychosis: incidence study in Brazil

Cristina Marta Del-Ben, Rosana Shuhama, Camila Marcelino Loureiro, Taciana Cristina Carvalho Ragazzi, Daniela Perocco Zanatta, Silvia Helena Galo Tenan, Jair Lício Ferreira Santos, Paulo Louzada-Junior, Antonio Carlos Dos Santos, Craig Morgan, Paulo Rossi Menezes

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

We estimated the incidence of first-episode psychosis over a 3-year period in a Brazilian catchment area comprising the region's main city, Ribeirão Preto (1 425 306 persons-years at risk), and 25 other municipalities with a total of 1 646 556 persons-years at risk. The incidence rates were estimated and adjusted by gender and age, using the direct standardisation method to the world population as reference. The incidence of psychosis was higher in the younger groups, men, and among Black and minority ethnic Brazilians. Psychosis incidence was lower in Ribeirão Preto (16.69/100 000 person-years at risk; 95% CI 15.68-17.70) compared with the average incidence in the remaining municipalities (21.25/100 000 person-years at risk; 95% CI 20.20-22.31), which have lower population density, suggesting a distinct role for urbanicity in the incidence of first-episode psychosis in low- and middle-income countries.

Original languageEnglish
Pages (from-to)726-729
Number of pages4
JournalThe British journal of psychiatry : the journal of mental science
Volume215
Issue number6
DOIs
Publication statusPublished - 1 Dec 2019

Keywords

  • incidence
  • Schizophrenia spectrum and other psychotic disorders
  • urban and rural populations

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