Factors Associated With Breastfeeding Among Women With Gestational Diabetes.

Background: Breastfeeding offers benefits to mother and child but is frequently not practiced among women whose pregnancy is complicated by gestational diabetes mellitus. Factors associated with not initiating or not maintaining breastfeeding among these women have been little investigated.
Research Aims: (1) To evaluate the frequency of breastfeeding for 30 days among women with a recent pregnancy complicated by gestational diabetes and (2) to determine factors associated with not initiating or not maintaining breastfeeding.
Methods: Between January 2014 and July 2017 we enrolled women with gestational diabetes at high-risk prenatal services in three Brazilian cities. We collected baseline sociodemographic and health data and followed up with participants by telephone. Using Kaplan-Meier curves, we calculated the proportions of participants not initiating breastfeeding or not maintaining it for at least 30 days. We used Poisson regression with robust variance to identify factors related to this outcome.
Results: Of the 2328 participants with complete information, 2236 (96.1%) initiated breastfeeding, and 2166 (93.1%) maintained breastfeeding for 30 days. Not having breastfed the previous infant (relative risk [RR] = 5.02, 95% CI [3.39, 7.45]), smoking during pregnancy (RR = 2.37, 95% CI [1.48, 3.80]), infant with health problems (RR = 2.25, 95% CI [1.27, 3.99]), early preterm birth (RR = 2.49, 95% CI [1.07, 5.77]), and not intending to breastfeed (RR = 3.73, 95% CI [1.89, 7.33]) were related to not maintaining breastfeeding for at least 30 days.
Conclusions: Breastfeeding initiation was nearly universal among participants, and most maintained breastfeeding for 30 days. Factors relating to not breastfeeding at 30 days were easily identifiable.