Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal

Introduction: Studies about urbanicity and psychosis show contradictory results. In northern European countries and China there is a positive relationship; in southern European and underdeveloped countries, a significant difference between rural and urban rates of psychosis has not been found....

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Main Authors: João Sampaio Lopes, Ana Afonso Quintão, Catarina Melo Santos, Maria de Fátima Urzal, Inês Donas-Boto
Format: Article
Language:English
Published: Sociedade Portuguesa de Psiquiatria e Saúde Mental 2023-06-01
Series:Revista Portuguesa de Psiquiatria e Saúde Mental
Subjects:
Online Access:http://www.revistapsiquiatria.pt/index.php/sppsm/article/view/416
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author João Sampaio Lopes
Ana Afonso Quintão
Catarina Melo Santos
Maria de Fátima Urzal
Inês Donas-Boto
author_facet João Sampaio Lopes
Ana Afonso Quintão
Catarina Melo Santos
Maria de Fátima Urzal
Inês Donas-Boto
author_sort João Sampaio Lopes
collection DOAJ
description Introduction: Studies about urbanicity and psychosis show contradictory results. In northern European countries and China there is a positive relationship; in southern European and underdeveloped countries, a significant difference between rural and urban rates of psychosis has not been found. Methods: We carried out a 5‐year retrospective observational study, with patients admitted to two inpatient units for first‐episode psychosis (FEP), in a rural area (Évora) and an urban area (Lisbon). We excluded affective or organic psychosis. Socio‐demographic and clinical data were extracted and analyzed. Results: The prevalence of FEP was the same for both areas (42/100 000 inhabitants), with a predominance of unemployed (63%) and lonesome individuals (81% in Évora versus 72% in Lisbon). The mean age was similar (Évora 43.4 years old; Lisbon 41.4 years old). Lisbon had a greater diversity of nationalities (16.3% vs 4.6%) and a higher rate of psychotic disturbance due to substance use (26.5% vs 21.6%). The most prevalent diagnosis in the Lisbon was unspecified psychotic disorder (UPD) (34.7%), while in Évora it was delusional disorder (DD) (21.5%) and acute andtransient psychotic disorder (21.5%). DD was a prevalent diagnosis in both areas, affecting mainly women and those with a higher median age. Duration of untreated psychosis (DUP) of less than 1 month was higher in Lisbon (24.5% vs 4.5%), but there was a high prevalence of DUP of more than 2 years in both samples (20.4% vs 23.1%). Discussion: The mean age of FEP was higher than in other studies, which may translate a significant prevalence of DD or reflect a higher DUP. A reduced DUP of less than 1 month in the rural area can be explained by greater isolation of the population, lower health literacy or better integration of patients in the community. The prevalence of UPD was higher in the urban area, possibly due to different forms of registration or a lower DUP. Conclusion: Our results are in line with studies reported in southern European countries, where no association was found between psychosis and urbanicity, and further studies are needed to elucidate this issue.
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spelling doaj.art-320000e677264730999be516713082522023-06-16T02:45:21ZengSociedade Portuguesa de Psiquiatria e Saúde MentalRevista Portuguesa de Psiquiatria e Saúde Mental2184-55222184-54172023-06-0110.51338/rppsm.416Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in PortugalJoão Sampaio Lopes0Ana Afonso Quintão1Catarina Melo Santos2Maria de Fátima Urzal3Inês Donas-Boto4Departamento de Psiquiatria e Saúde Mental do Hospital do Espírito Santo de Évora, Évora, PortugalServiço de Psiquiatria de Adultos do Centro Hospitalar Lisboa Ocidental (Hospital Egas Moniz), Lisboa, PortugalServiço de Psiquiatria de Adultos do Centro Hospitalar Lisboa Ocidental (Hospital Egas Moniz), Lisboa, PortugalServiço de Psiquiatria de Adultos do Centro Hospitalar Lisboa Ocidental (Hospital Egas Moniz), Lisboa, PortugalInstituto Português de Oncologia de Lisboa, Lisboa, Portugal Introduction: Studies about urbanicity and psychosis show contradictory results. In northern European countries and China there is a positive relationship; in southern European and underdeveloped countries, a significant difference between rural and urban rates of psychosis has not been found. Methods: We carried out a 5‐year retrospective observational study, with patients admitted to two inpatient units for first‐episode psychosis (FEP), in a rural area (Évora) and an urban area (Lisbon). We excluded affective or organic psychosis. Socio‐demographic and clinical data were extracted and analyzed. Results: The prevalence of FEP was the same for both areas (42/100 000 inhabitants), with a predominance of unemployed (63%) and lonesome individuals (81% in Évora versus 72% in Lisbon). The mean age was similar (Évora 43.4 years old; Lisbon 41.4 years old). Lisbon had a greater diversity of nationalities (16.3% vs 4.6%) and a higher rate of psychotic disturbance due to substance use (26.5% vs 21.6%). The most prevalent diagnosis in the Lisbon was unspecified psychotic disorder (UPD) (34.7%), while in Évora it was delusional disorder (DD) (21.5%) and acute andtransient psychotic disorder (21.5%). DD was a prevalent diagnosis in both areas, affecting mainly women and those with a higher median age. Duration of untreated psychosis (DUP) of less than 1 month was higher in Lisbon (24.5% vs 4.5%), but there was a high prevalence of DUP of more than 2 years in both samples (20.4% vs 23.1%). Discussion: The mean age of FEP was higher than in other studies, which may translate a significant prevalence of DD or reflect a higher DUP. A reduced DUP of less than 1 month in the rural area can be explained by greater isolation of the population, lower health literacy or better integration of patients in the community. The prevalence of UPD was higher in the urban area, possibly due to different forms of registration or a lower DUP. Conclusion: Our results are in line with studies reported in southern European countries, where no association was found between psychosis and urbanicity, and further studies are needed to elucidate this issue. http://www.revistapsiquiatria.pt/index.php/sppsm/article/view/416Psychotic DisordersRural PopulationUrban Population
spellingShingle João Sampaio Lopes
Ana Afonso Quintão
Catarina Melo Santos
Maria de Fátima Urzal
Inês Donas-Boto
Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
Revista Portuguesa de Psiquiatria e Saúde Mental
Psychotic Disorders
Rural Population
Urban Population
title Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
title_full Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
title_fullStr Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
title_full_unstemmed Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
title_short Urbanicity and Psychosis: Is there a Connection? A Comparative Study between an Urban and Rural Area in Portugal
title_sort urbanicity and psychosis is there a connection a comparative study between an urban and rural area in portugal
topic Psychotic Disorders
Rural Population
Urban Population
url http://www.revistapsiquiatria.pt/index.php/sppsm/article/view/416
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