Nelson Jennifer M, Li Ruowei, Perrine Cria G, Scanlon Kelley S
Epidemic Intelligence Service, Division of Scientific Education and Professional Development, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Division of Nutrition, Physical Activity, and Obesity, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Birth. 2018 Jun;45(2):178-183. doi: 10.1111/birt.12323. Epub 2017 Nov 17.
Although previous studies suggest that the intentions of mothers to breastfeed during pregnancy strongly predict actual breastfeeding practice, no studies have examined the changes in the intentions of mothers to breastfeed from the prenatal to neonatal periods. The purpose of this study was to examine changes in intended breastfeeding duration from the prenatal to neonatal periods, their association with actual duration, and predictors for shortened duration.
The Infant Feeding Practices Study II was a longitudinal study of mothers in the United States. Changes to intended breastfeeding duration were calculated as the difference from prenatal to neonatal reports (months); we compared this change to actual breastfeeding duration. By using multivariable logistic regression, we identified maternal characteristics associated with a shortened breastfeeding intention.
Of 1780 women, 43.7% had no change to intended breastfeeding duration, 35.0% had a shorter intended duration, and 21.3% had a longer intended duration. Mothers with shortened intended duration also had shorter actual duration (P < .001). Women of Hispanic ethnicity, with a prepregnancy body mass index of ≥30 kg/m , who were primiparous and who smoked prenatally had increased odds of shortening their breastfeeding intention from prenatal to neonatal reports. A maternal age of ≥35 years was associated with decreased odds of shortened breastfeeding intention.
Approximately one in three women shorten their intended breastfeeding duration during the early postpartum period, which negatively affects the actual duration of their breastfeeding. Women may need additional support during the early postpartum period to meet their prenatal breastfeeding intentions.
尽管先前的研究表明，母亲在孕期进行母乳喂养的意愿能有力地预测实际的母乳喂养行为，但尚无研究考察母亲从产前到新生儿期母乳喂养意愿的变化。本研究的目的是考察从产前到新生儿期预期母乳喂养时长的变化、其与实际时长的关联以及缩短时长的预测因素。
《婴儿喂养实践研究II》是一项针对美国母亲的纵向研究。预期母乳喂养时长的变化通过计算产前报告与新生儿期报告之间的差异（月）得出；我们将这一变化与实际母乳喂养时长进行比较。通过多变量逻辑回归，我们确定了与缩短母乳喂养意愿相关的母亲特征。
在1780名女性中，43.7%的母亲预期母乳喂养时长没有变化，35.0%的母亲预期时长缩短，21.3%的母亲预期时长延长。预期时长缩短的母亲实际母乳喂养时长也较短（P < .001）。西班牙裔女性、孕前体重指数≥30 kg/m²、初产妇以及产前吸烟的女性，从产前到新生儿期报告缩短母乳喂养意愿的几率增加。母亲年龄≥35岁与缩短母乳喂养意愿的几率降低相关。
约三分之一的女性在产后早期缩短了她们预期的母乳喂养时长，这对她们实际的母乳喂养时长产生了负面影响。在产后早期，女性可能需要额外的支持来实现她们产前的母乳喂养意愿。
