Breastfeeding Programs and Policies, Breastfeeding Uptake, and Maternal Health Outcomes in Developed Countries

SYSTEMATIC REVIEW

July 18, 2018

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Purpose of Review

To summarize the effectiveness of community, workplace, and health care system–based programs and policies aimed at supporting and promoting breastfeeding, and to determine the association between breastfeeding and maternal health.

Key Messages

Baby-Friendly Hospital Initiative (BFHI) is associated with improved rates of breastfeeding initiation and duration.
Health care staff education combined with postpartum home visits may be effective for increasing breastfeeding duration.
Health care staff education alone (with no additional breastfeeding support services) may not be effective for increasing breastfeeding initiation rates.
For women enrolled in the WIC Program, peer-support interventions offered by WIC agencies may improve rates of breastfeeding initiation and duration.
Breastfeeding is associated with reduced maternal risk of breast and ovarian cancer, hypertension, and type 2 diabetes.
Workplace, school-based, and community-based interventions and underlying socioeconomic factors need further research.

Structured Abstract

Objectives. To summarize the effectiveness of community, workplace, and health care system–based programs and policies aimed at supporting and promoting breastfeeding and determine the association between breastfeeding and maternal health.

Data sources. We searched PubMed®/MEDLINE®, the Cochrane Library, and CINAHL® from January 1, 1980, to October 12, 2017, for studies relevant to the effectiveness of health care system–based, workplace, and community breastfeeding programs and policies. For evidence on breastfeeding and maternal health, we updated the 2007 Agency for Healthcare Research and Quality report on this topic and searched the same databases from November 1, 2005, to October 12, 2017. For studies of breastfeeding programs and policies, trials, systematic reviews, and observational studies with a control group were eligible; we excluded primary care–based programs delivered as part of routine care. For studies related to breastfeeding and maternal health, we included systematic reviews, case-control studies, and cohort studies.

Review methods. Pairs of reviewers independently selected, extracted data from, and rated the risk of bias of relevant studies; they graded the strength of evidence (SOE) using established criteria. We synthesized all evidence qualitatively.

Results. We included 128 studies (137 publications) and 10 systematic reviews. Of these, 40 individual studies were relevant to the effectiveness of breastfeeding programs or policies, and the remainder were relevant to one or more maternal health outcomes. Based on evidence from one large randomized controlled trial (RCT) (Promotion of Breastfeeding Intervention Trial [PROBIT], N=17,046) enrolling mothers who intended to breastfeed and nine cohort studies (1,227,182 women), we graded the SOE for the Baby-Friendly Hospital Initiative (BFHI) as moderate for improving rates of breastfeeding duration. Evidence from eight cohort studies of BFHI (135,983 women) also demonstrates improved rates of breastfeeding initiation (low SOE). Low SOE (k=4 studies; 1,532 women) supports the conclusion that health care education or training of staff alone (without additional breastfeeding support services) does not improve breastfeeding initiation rates. Women, Infants and Children (WIC, a Federal supplemental nutrition program) interventions that focus on peer support are effective in improving rates of breastfeeding initiation and duration (low SOE). We found limited evidence for other (community-based) interventions and no comparative studies on workplace or school-based interventions or harms associated with interventions.

For maternal health outcomes, low SOE supports the conclusion that ever breastfeeding or breastfeeding for longer durations may be associated with lower rates of breast cancer, epithelial ovarian cancer, hypertension, and type 2 diabetes, but not fractures. Because of heterogeneity and inconsistent results, we found insufficient evidence on whether breastfeeding is associated with postpartum depression, cardiovascular disease, or postpartum weight change.

Conclusions. The body of evidence for breastfeeding programs and policies was diverse in terms of interventions and settings. Current evidence supports the benefit of BFHI for improving rates of breastfeeding initiation and duration; however, evidence from one large RCT (PROBIT) has limited applicability, and observational studies do not clearly establish the magnitude of benefit. For women enrolled in WIC, low SOE supports peer-support interventions for improving breastfeeding outcomes. The identified associations between breastfeeding and improved maternal health outcomes are supported by evidence from observational studies, which cannot determine cause-and-effect relationships.

Citation

Suggested citation: Feltner C, Weber RP, Stuebe A, Grodensky CA, Orr C, Viswanathan M. Breastfeeding Programs and Policies, Breastfeeding Uptake, and Maternal Health Outcomes in Developed Countries. Comparative Effectiveness Review No. 210. (Prepared by the RTI International–University of North Carolina at Chapel Hill Evidence-based Practice Center under Contract No. 290-2015-00011-I.) AHRQ Publication No. 18-EHC014-EF. Rockville, MD: Agency for Healthcare Research and Quality; July 2018. Posted final reports are located on the Effective Health Care Program search page. DOI: doi.org/10.23970/AHRQEPCCER210[link is external].