Prevalence and temporal trend of prematurity in Brazil before and during the Covid-19 pandemic: analysis of the temporal series from 2011 to 2021

• Autor(a) principal: Alberton, Marcos
• Data de Publicação: 2023
• Outros Autores: Rosa, Vanessa Martins, Iser, Betine Pinto Moehlecke
• Tipo de documento: preprint
• Idioma: por
• Título da fonte: SciELO Preprints
• Texto Completo: https://preprints.scielo.org/index.php/scielo/preprint/view/5853
• topic: Covid-19; Nascimento Prematuro; Recém-Nascido Prematuro; Estudos de Séries Temporais; Brasil; COVID-19; Premature Birth; Infant, Premature; Time Series Studies; Brazil; COVID-19; Nacimiento Prematuro; Recien Nacido Prematuro; Estudios de Series Temporales; Brasil

Objective: To measure prematurity prevalence from 2011-2021, according to brazilian’s macroregion and maternal characteristics, in the last 11 years, comparing the pandemic years of COVID-19 (2020-2021), with the historical series (2011-2019). Methods: Ecological study based on the Information System on Live Births. Prevalences are calculated according to year, macro-region, and maternal characteristics. Time series analysis by the generalized linear model of Prais-Winsten. Results: Prematurity rate between 2011-2021: 11,1%, stable in the period. The mean in the pandemic period (11.3% 95%CI 11.2;11.4%) resembled the baseline mean (11.0%95%CI10.6; 11.5). The northern region (11.6%) had the highest rate in 2011-2021. Twin pregnancy (56.3%) and pregnant with 4-6 prenatal visits (16.7%) presented an increasing trend (p<0.001).  Extreme maternal age, black and indigenous women, and lower education had higher rates. Conclusion: Greater prematurity in pregnant in women in social vulnerability, twin pregnancies, and Northern Region. The rates remained stable, with no difference between periods.