Reacción a "Reactions to study indicating that neither e-cigarettes nor nicotine patch use are associated with adverse effects in pregnancy"

Smoking in pregnancy is dangerous, and many people want to quit and reduce these risks. E-cigarettes are an effective way for people to quit smoking and these new findings may ease some worries of pregnant smokers who want to use them to quit smoking. 

An earlier analysis of this trial found a similar safety profile between those who were randomly given e-cigarettes compared with those given nicotine replacement therapy to quit smoking, but this may have resulted from a difference in the actual usage of the two products. This new study analysed the comparative safety based on their actual use, although this meant the two groups were no longer randomly selected. Taken together, the similar sets of results across the two different approaches are reassuring.