Prevalence and predictors of exclusive breastfeeding among immigrant and Canadian-born Chinese women.

Breastfeeding is the optimal method for infant feeding, yet migrant women may be at risk for suboptimal exclusivity rates. In a cohort of immigrant and Canadian-born Chinese women, our objectives were to (a) describe patterns and prevalence of exclusive breastfeeding at 1, 3, and 6 months postpartum; (b) identify risk and protective factors associated with exclusivity; and (c) examine potentially differential importance of these factors across this 6-month period. This was a prospective study of 565 immigrants and Canadian-born Chinese women (Toronto, Canada). Exclusive breastfeeding was measured at 1, 3, and 6 months postpartum. Predictors comprised fixed (demographics, history of depression, immigrant status, prenatal breastfeeding classes, in-hospital formula supplementation, baseline social support, and baseline acculturative stress) and time-dependent (depression, anxiety, fatigue, and breastfeeding problems) variables. Descriptive statistics, logistic regression, and generalized linear mixed models, respectively, were undertaken to address the objectives. Patterns of breastfeeding practices included exclusive breastfeeding in all time points (26.8%) or none (32.9%) and moving from exclusive to nonexclusive (20.3%) or nonexclusive to exclusive breastfeeding (15.2%). Women less likely to breastfeed exclusively at 1, 3, or 6 months were those whose infants received in-hospital formula supplementation. Exclusivity attrition was higher between 3 and 6 months than 1-3 months. Immigrant status and in-hospital formula supplementation had a significant impact on exclusivity earlier in the postpartum period while breastfeeding problems were associated with decreased exclusivity across time. Proactive preventive efforts are need to maintain breastfeeding exclusivity especially between 3 and 6 months if women are to meet international breastfeeding recommendations.