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Exclusive breastfeeding frequency at 30 days of life: review of longitudinal studies1 1 Paola Soledad Mosquera received a Master’s degree scholarship from the National Council for Scientific and Technological Development of Brazil (CNPq), for the Graduate Program in Public Health (process no. 133448/2016-9). Marly Augusto Cardoso is a CnPq Productivity Fellow (process no. 310528/2017-8). Research supported by Fundação de Amparo à Pesquisa do Estado de São Paulo, Brasil (FAPESP, processo no. 2016/00270-6). The opinions, hypotheses, and conclusions or recommendations expressed in this material are the responsibility of the authors and do not necessarily reflect the vision of CNPq and FAPESP.

Abstract

Early life feeding can affect children’s development and survival. Adherence to breastfeeding practices and regular monitoring is essential. This study aims to conduct an integrative review of longitudinal studies on the frequency of exclusive breastfeeding (EBF) at 30 days of life. Articles were retrieved from the PubMed and LILACS databases. The combination of descriptors used was: “prospective study” and “breast feeding.” The search was limited to articles published between 2015 and 2020 in English, Spanish, and Portuguese. We selected 17 original studies. Despite their methodological differences regarding sample size and type, follow-up period, and EBF definition and measurement method, results indicated a high rate of breastfeeding initiation (≥86%) and a wide variation in the occurrence of EBF at 30 days of life (4.5% - 86%) with substantial decline (<60%) in 63% of the investigated areas. These results are far from complying with the recommendation from the World Health Organization of maintaining EBF up to the sixth month of a child’s life and point to the need for further investigations with a standardized methodology to allow for comparisons within and between countries, aiming at planning actions which support breastfeeding.

Keywords:
Breast feeding; Lactation; Review; Longitudinal Studies; Cohort Studies

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