“…Pacifier use has been identified as a factor associated with shorter duration of EBF in observational studies (Vogel, Hutchison, & Mitchell, ; Hörnell, Aarts, Kylberg, Hofvander, & Gebre‐Medhin, ; Victora, Behague, Barros, Olinto, & Weiderpass, ). A recent cross‐sectional analysis conducted with data from two Brazilian surveys showed that pacifier use was inversely associated with EBF rates with this association remaining stable across time (Buccini, Perez‐Escamilla, & Venancio, ). However, because of potential confounding it is unknown if this relationship is indeed causal (Fein, ; Cunha, Leite, & Machado, ).…”