Prevalence and factors associated with tea consumption in the first month of life in a birth cohort in the Northeast Region of Brazil

Abstract Objectives: to determine the prevalence and analyze the factors associated with newborns drinking tea in a birth cohort. Methods: A cross-sectional study with nested prospective cohort was conduct with 329 puerperal women and their newborns in Vitória da Conquista, Bahia. Sociodemographic and information about the newborn's diet and mothers/babies was obtained at a maternity and 30 days after birth, at home visits. The prevalence ratios (PR) and its respective confidence intervals (CI95%) were estimated with Poisson regression models according to the hierarchical conceptual model. Results: the prevalence of tea consumption up to 30 days of life was 34.6% (CI95%=29.7; 40.0%). The sociodemographic and maternal characteristics associated with the outcome were not having a partner (PR = 1.39; CI95%=1.03-1.88), more than eight years of schooling (PR=1.38; CI95%=1.03-1.84), lower income (PR=2.21; CI95%=1.31-3.73), primiparous (PR=1.48; CI95%=1.01-2.17) and does not have any experience with breastfeeding before (PR=2.25; CI95%=1.48-3.41). As for the child, there was a higher prevalence of tea consumption than among those who received artificial milk in the first month of life (PR= 2.10; CI95%=1.62-2.73). Conclusions: the offer of tea in the first month of life was high. Tea consumption was positively associated with sociodemographic, maternal and newborn feeding factors.

摘要 研究目的：明确出生队列（birth cohort）中新生儿饮茶的流行率，并分析其相关影响因素。方法：在巴西巴伊亚州维多利亚达孔基斯塔市开展一项嵌套于前瞻性队列的横断面研究，共纳入329名产褥期妇女（puerperal women）及其新生儿。研究分别在产科病房及产后30天的家庭随访中，收集社会人口学信息、新生儿喂养相关资料以及母婴双方的相关信息。基于分层概念模型，采用泊松回归模型（Poisson regression models）估算患病率比（prevalence ratios, PR）及其对应95%置信区间（confidence intervals, CI95%）。结果：新生儿出生后30天内饮茶的流行率为34.6%（95%置信区间：29.7%~40.0%）。与该饮茶结局相关的社会人口学及产妇特征包括：无固定伴侣（PR=1.39，95%CI：1.03~1.88）、受教育年限超过8年（PR=1.38，95%CI：1.03~1.84）、家庭低收入水平（PR=2.21，95%CI：1.31~3.73）、初产妇（PR=1.48，95%CI：1.01~2.17）以及无既往母乳喂养经验（PR=2.25，95%CI：1.48~3.41）。在新生儿层面，出生后第一个月接受人工乳（artificial milk）喂养的婴儿饮茶流行率显著更高（PR=2.10，95%CI：1.62~2.73）。结论：新生儿出生后第一个月内饮茶的比例较高。新生儿饮茶行为与社会人口学特征、产妇特征及新生儿喂养因素呈显著正相关。