Análise socioespacial dos nascimentos, óbitos neonatais e fetais ocorridos no município de São Paulo em 2010 / Socio-spatial analysis of births, neonatal and fetal deaths occurred in the city of São Paulo in 2010

RESUMO

Introdução - O estudo de eventos de saúde deve levar em conta que as características dos indivíduos de uma determinada localidade não constituem simples somatórios das medidas de cada um dos sujeitos e há que se considerar um modelo explicativo baseado em níveis de organização e na estrutura de dependência entre o nível individual e o nível de contexto onde esses sujeitos estão inseridos. Assim, a análise dos nascimentos e da mortalidade neonatal e fetal pode incorporar diferentes variáveis associadas ao contexto onde se expressam considerando a complexidade e as particularidades dessas ocorrências numa população e num espaço tão diverso. Metodologia - Foi realizado estudo transversal dos nascimentos, óbitos neonatais

ABSTRACT

Introduction - The study of health events should take into account that the characteristics of the individuals of a given locality are not simple sums of the measures of each one of the subjects and it is necessary to consider an explanatory model based on levels of organization and the structure of dependence between the Individual level and the context level where these subjects are inserted. Thus, the analysis of neonatal and fetal births and mortality can incorporate different variables associated to the context considering the complexity and the peculiarities of these occurrences in a population and in such a diverse space. Methodology - A cross-sectional study of births, neonatal deaths ((<28 days of life) and fetal deaths of resident mothers occurred in the city of. The maternal residence addresses were geocoded to calculate the distance between the residences and the hospital. In addition, each individual was characterized with socioeconomic information from the Demographic Census of 2010, according to the weighting areas. The census tracts of residence were classified according to Index of Social Vulnerability - IPVS. Hospitals were classified in SUS and non-SUS and for live births (and neonatal deaths) were also classified according to reference for gestational risk care. The clusters of live births (LB) were obtained through the spatial sweep technique. The effect of the socioeconomic context on neonatal and fetal mortality was verified by multilevel analysis. Results - It was verified that the clusters both SUS and non-SUS are not homogeneous between them, with differences in relation to the mothers' age, schooling, number of prenatal consultations and prematurity. The mean theoretical distance traveled by the mothers to the hospital was 51.8% lower in the SUS clusters than in the non-SUS. The shorter distance in SUS births indicates the regionalization of childbirth care in the city of São Paulo. The results showed that there is an increase in the neonatal mortality rate with increased social vulnerability. There was a contextual effect of social vulnerability and it was observed that only the individual variables that represent the characteristics of gestation, newborn and prenatal care were shown to be associated with neonatal mortality. The contextual effect of social vulnerability on the individual variables that represent the characteristics of gestation, fetus and maternal schooling has been shown to be associated with fetal mortality. In the multilevel modeling whose context was the level of vulnerability of the place of maternal residence, no significant variability of fetal mortality between the levels was observed. Conclusion - The detection of clusters and their socioeconomic characterization of the areas contribute to the understanding of the birth pattern and the public health interventions, providing an improvement in the attendance of prenatal access and delivery needs in a more efficient way. The results in relation to neonatal and fetal mortality reveal that social inequalities are present in the causal chain of these two outcomes and that contributes to the understanding of the risk factors for neonatal and fetal mortality, especially with regard to the participation of social vulnerability In mortality and explicit the distance between the maternal residence and the hospital as a socioeconomic indicator