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Tuberculosis and living conditions in Salvador, Brazil: a spatial analysis

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Date
2014
Author
Erazo, Carlos
Pereira, Susan M.
Costa, Maria da Conceição N.
Evangelista-Filho, Delsuc
Braga, José Ueleres
Barreto, Mauricio L.
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Abstract
OBJECTIVE: To investigate spatial tuberculosis (TB) distribution patterns and the association between living conditions and incidence of the disease in Salvador, Bahia, Brazil. METHODS: An ecological study with neighborhood as the unit of analysis. Data was collected from the Notifiable Diseases Information System (Sistema de Informação de Agravos de Notificação, SINAN) and the Brazilian Institute of Geography and Statistics (Instituto Brasileiro de Geografia e Estatística, IBGE). Rates of TB incidence were transformed and smoothed. Spatial analysis was applied to identify spatial auto-correlation and "hotspot" areas of high and low risk. The relationship between TB and living conditions was confirmed by spatial linear regression. RESULTS: The incidence of TB in Salvador displayed heterogeneous patterns, with higher rates occurring in neighborhoods with poor living conditions in 1995 - 1996. Over the study period, disease occurrence declined, particularly in less-privileged strata. In 2004 - 2005, the association between living conditions and TB was no longer observed. CONCLUSIONS: The heterogeneous spatial distribution of TB in Salvador previously reflected inequalities related to living conditions. Improvements in such conditions and health care for the less privileged may have contributed to observed changes.(AU)
 
OBJETIVO: Investigar las pautas de distribución espacial de la tuberculosis (TB) y la asociación de las condiciones de vida con la incidencia de esta enfermedad en Salvador, estado de Bahía (Brasil). MÉTODOS: Estudio ecológico que tomó el vecindario como unidad de análisis. Se recopilaron datos del Sistema de Información de Enfermedades de Notificación Obligatoria (Sistema de Informação de Agravos de Notificação, SINAN) y el Instituto Brasileño de Geografía y Estadística (Instituto Brasileiro de Geografia e Estatística, IBGE). Se transformaron y suavizaron las tasas de incidencia de la TB. Se aplicó análisis espacial para establecer la autocorrelación espacial y las áreas "conflictivas" de alto y bajo riesgo. Se confirmó la relación entre la TB y las condiciones de vida mediante regresión lineal espacial. RESULTADOS: La incidencia de la TB en Salvador mostró modelos heterogéneos, con tasas mayores en los vecindarios cuyas condiciones de vida eran desfavorables en 1995 y 1996. A lo largo del período de estudio, disminuyó la aparición de nuevos casos de la enfermedad, en particular en los estratos menos privilegiados. En el 2004 y el 2005, ya no se observó la asociación entre TB y condiciones de vida. CONCLUSIONES: La distribución espacial heterogénea de la tuberculosis en Salvador reflejaba anteriormente las desigualdades relacionadas con las condiciones de vida. Las mejoras de dichas condiciones y la atención de salud dirigida a los menos privilegiados pueden haber contribuido a los cambios observados.(AU)
 
Series
Rev Panam Salud Publica;36(1),jul. 2014
Subject
Tuberculosis; Tuberculosis; Prevention and Mitigation; Spatial Analysis; Social Inequity; Risk Groups; Brazil; Tuberculosis; Tuberculosis; Prevención y Mitigación; Análisis Espacial; Inequidad Social; Grupos Vulnerables; Brasil; Equidad, Salud y Desarrollo Humano; Equidade, Saúde e Desenvolvimento Humano; Equity, Health and Human Development
URI
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892014000600004
https://iris.paho.org/handle/10665.2/7833
Citation
Erazo, Carlos,Pereira, Susan M.,Costa, Maria da Conceição N.,Evangelista-Filho, Delsuc,Braga, José Ueleres,Barreto, Mauricio L. (2014) Tuberculosis and living conditions in Salvador, Brazil: a spatial analysis. Rev Panam Salud Publica;36(1) 24-30,jul. 2014. Retrieved from http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49892014000600004
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  • Pan American Journal of Public Health

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