The seasonality of 65 million births in Brazil – 1997-2018

Autores

  • Morvan de Mello Moreira Fundação Joaquim Nabuco Coordenação Geral de Estudos Econômicos e Populacionais
  • Wilson Fusco Fundação Joaquim Nabuco http://orcid.org/0000-0002-1418-0423
  • Cristiano Ferraz Universidade Federal de Pernambuco

DOI:

https://doi.org/10.33148/CES25954091v35n1(2020)1870

Palavras-chave:

Birth seasonality, Sociodemographic factors

Resumo

The seasonality of births has been a universal phenomenon worthy of attention since the XVIII century. Exhibiting a variety of forms, many times showing similar patterns in dissimilar societies, and dissimilar patterns in societies alike, there has never been a plausible unifying explanation for their behavior. Finding reasonable causes to understand birth seasonality worldwide is still a challenge. This paper intends to contribute to the discussion on birth seasonality in light of the Brazilian reality, analyzing data about 65,764,313 births from 1997 to 2018 in Brazil. This study investigates monthly birth seasonality, according to social-demographic characteristics of mothers (region, age, race/color, schooling, fertility, and marital status), adjusted to consider the same length for each month of the year. Brazil has two clear periods of birth peaks: the main one is observed in March, April, and May, due to winter conception. A second important peak is observed in September, related to conceptions in December. A clear valley is observed in November and December, due to summertime conceptions. In spite of the continental dimensions of Brazil, its climatic diversity and broad social differences, the Brazilian population presents the same temporal birth distribution, according to geographic spaces and population segments, due mainly to conceptions happening in the Brazilian winter season.

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Biografia do Autor

Morvan de Mello Moreira, Fundação Joaquim Nabuco Coordenação Geral de Estudos Econômicos e Populacionais

Coordenação Geral de Estudos Econômicos e Populacionais

Doutor em Demografia

Wilson Fusco, Fundação Joaquim Nabuco

Demógrafo; Pesquisador da Fundação Joaquim Nabuco

Cristiano Ferraz, Universidade Federal de Pernambuco

Estatístico; Professor da Universidade Federal de Pernambuco

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Publicado

06/19/2020

Como Citar

Moreira, M. de M., Fusco, W., & Ferraz, C. (2020). The seasonality of 65 million births in Brazil – 1997-2018. Cadernos De Estudos Sociais, 35(1). https://doi.org/10.33148/CES25954091v35n1(2020)1870

Edição

Seção

Artigos - Temas livres (CHAMADA REGULAR)