Graduate Program of Community Health, Center of Health and Sports Science, Federal University of Acre, Rio Branco 69920-900, AC, Brazil.
Department of Epidemiology and Quantitative Methods in Health, National School of Public Health Sérgio Auroca, Fundação Oswaldo Cruz, Rio de Janeiro 21041-210, RJ, Brazil.
Nutrients. 2024 Oct 8;16(19):3408. doi: 10.3390/nu16193408.
Continued breastfeeding reduces infant mortality and provides nutritional, immunological, and developmental benefits for the child.
A prospective cohort study conducted in 2015 followed 608 children who were breastfed between 6 and 24 months. The study assessed the risk of breastfeeding interruption at 12, 18, and 24 months, as well as the factors associated with this outcome, in a cohort of newborns in Rio Branco, using the life table method.
The factors associated with breastfeeding cessation and their 95% confidence intervals (CI95%) were analyzed using both crude and adjusted Cox proportional hazards regression in a hierarchical model. The risks of breastfeeding cessation at 12, 18, and 24 months were 19%, 65%, and 71%, respectively.
Factors positively associated with the risk of breastfeeding cessation include the use of a pacifier before 6 weeks of age (HR = 1.62; CI: 95% 1.24-2.11) and the use of a bottle during the first year of life (HR = 1.41; CI: 95% 1.11-1.78). Maternal return to work after the birth of the baby (HR = 0.78; CI: 95% 0.62-0.97) was found to be negatively associated with the risk of breastfeeding interruption.
Early pacifier use before 6 weeks and the introduction of a bottle in the first year affect continued breastfeeding. Maternal employment was associated with reduced risk of breastfeeding cessation, contrary to most studies.
持续母乳喂养可降低婴儿死亡率，并为儿童提供营养、免疫和发育方面的益处。
2015 年进行的一项前瞻性队列研究随访了 608 名在 6 至 24 个月期间进行母乳喂养的儿童。该研究使用寿命表法评估了在里约布兰科的新生儿队列中，12、18 和 24 个月时母乳喂养中断的风险，以及与该结局相关的因素。
使用未调整和调整后的 Cox 比例风险回归分层模型，分析与母乳喂养终止相关的因素及其 95%置信区间（CI95%）。12、18 和 24 个月时母乳喂养终止的风险分别为 19%、65%和 71%。
与母乳喂养终止风险呈正相关的因素包括在 6 周龄前使用奶嘴（HR = 1.62；CI：95% 1.24-2.11）和在生命的第一年使用奶瓶（HR = 1.41；CI：95% 1.11-1.78）。母亲在婴儿出生后返回工作（HR = 0.78；CI：95% 0.62-0.97）与母乳喂养中断的风险呈负相关。
在 6 周龄前使用奶嘴和在第一年引入奶瓶会影响持续母乳喂养。与大多数研究相反，母亲就业与母乳喂养终止的风险降低相关。
