“…A number of studies published after this meta‐analysis including 2 large cohorts found that any alcohol intake was associated with higher risk of preterm birth (Aliyu et al, ; Miyake et al, ; Nykjaer et al, ; Salihu et al, ). However, other recent studies found no association (Baron et al, ; Cooper et al, ; Dale et al, ; Lundsberg et al, ; McCarthy et al, ; Meyer‐Leu et al, ; Sbrana et al, ; Smith et al, ; Strandberg‐Larsen et al, ), and one study indicated lower risk among drinkers compared to nondrinkers (Pfinder et al, ), which is in accordance with previous studies suggesting an apparently beneficial effect of a low‐to‐moderate alcohol intake (Albertsen et al, ; Jaddoe et al, ; Kesmodel et al, ). It has been discussed whether these findings may be due to residual confounding (the healthy drinker effect) caused by the inability to adjust for lifestyle and socioeconomic factors (Bailey and Sokol, ; Henderson et al, ; Henderson et al, ; Patra et al, ; Pfinder et al, ).…”