RESUMO
OBJECTIVE: To evaluate the effectiveness of a professional one-to-one antenatal breastfeeding support and education intervention on the exclusivity and duration of breastfeeding. METHODS: A total of 469 primiparous women who attended the antenatal clinics of two geographically distributed public hospitals in Hong Kong were randomized to receive either standard antenatal care or a one-to-one antenatal breastfeeding support and education session. The primary outcome was the prevalence of exclusive breastfeeding at 6 weeks postpartum. Secondary outcomes were the prevalence of exclusive breastfeeding at 3 and 6 months postpartum as well as the overall duration of any and exclusive breastfeeding across the first 6 months postpartum. RESULTS: The exclusive breastfeeding rate in the intervention group was 37.8% at 6 weeks postpartum compared with 36.4% in the standard care group (P=.77; 95% confidence interval [CI] -0.08 to 0.11). There were no significant differences between the two treatment groups in exclusive breastfeeding rates at 3 and 6 months or in the overall duration of any (hazard ratio [HR] 1.11, 95% CI 0.88-1.40] or exclusive breastfeeding (HR 0.96, 95% CI 0.79-1.17). The study had a least 80% power to detect a 50% increase in the rate of exclusive breastfeeding at 6 weeks postpartum. CONCLUSION: In a setting with a high breastfeeding initiation rate, one-to-one antenatal breastfeeding support and education did not increase the exclusivity or duration of breastfeeding. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov, www.clinicaltrials.gov, NCT01648114.
