This nationally representative study documents increased risk of respiratory tract infection including pneumonia and recurrent OM in children who were fully breastfed for 4 vs 6 months. These findings support current recommendations that infants receive only breast milk for the first 6 months of life.
The risk factors for delayed OL are multidimensional. Public health and obstetric and maternity care interventions are needed to address what has become an alarmingly common problem among primiparas.
Objective
To evaluate in-hospital formula supplementation among first time mothers who intended to exclusively breastfeed and determined if in-hospital formula supplementation shortens breastfeeding duration after adjusting for breastfeeding intention.
Study design
We assessed strength of breastfeeding intentions prenatally in a diverse cohort of expectant primiparae and followed infant feeding practices through day 60. Among mothers planning to exclusively breastfed their healthy term infants for ≥1 week, we determined predictors, reasons, and characteristics of in-hospital formula supplementation; and calculated the intention-adjusted relative risk (ARR) of not fully breastfeeding days 30–60 and breastfeeding cessation by day 60 with in-hospital formula supplementation (n=393).
Results
210 (53%) infants exclusively breastfed during the maternity stay and 183 (47%) received in-hospital formula supplementation. The most prevalent reasons mothers cited for inhospital formula supplementation were: perceived insufficient milk supply (18%), signs of inadequate intake (16%), and poor latch or breastfeeding (14%). Prevalence of not fully breastfeeding days 30–60 was 67.8% vs 36.7%, ARR 1.8 [95% CI, 1.4–2.3], in-hospital formula supplementation vs exclusively breastfed groups respectively, and breastfeeding cessation by day 60 was 32.8% vs 10.5%, ARR 2.7 [95% CI,1.7–4.5]. Odds of both adverse outcomes increased with more in-hospital formula supplementation feeds (not fully breastfeeding days 30–60, P=.003 and breastfeeding cessation, P=.011).
Conclusions
Among women intending exclusively breastfed, in-hospital formula supplementation was associated with nearly 2-fold greater risk of not fully breastfeeding days 30–60 and nearly 3-fold risk of breastfeeding cessation by day 60, even after adjusting for strength of breastfeeding intentions. Strategies should be sought to avoid unnecessary in-hospital formula supplementation and to support breastfeeding when in-hospital formula supplementation is unavoidable.
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