Preterm birth remains a multifactorial, worldwide problem. Though there are multiple established risk factors for preterm birth (e.g. previous preterm birth, short cervix), the association between maternal alcohol consump-tion and prematurity is less clear, with risk ratios ranging from 0.66 (95% CI 0.52–0.84) to 1.34 (95% CI 1.28–1.41)(Strandberg-Larsen et al. Eur J Epi-demiol 2017;32:751–64; Aliyu et al. Eur J Public Health 2010;20:582–7)