“This study is an important development in managing the sometimes seemingly intractable problem of helping pregnant smokers to quit. Smoking in pregnancy is a major health hazard to the unborn and newborn baby, causing the loss of up to 5000 babies every year and possibly impairing development throughout the child’s life. Methods to help pregnant women to quit are therefore urgently needed, particularly since conventional methods are of relatively low efficacy in this group.

“In this study, the relative efficacy on effectiveness is robust. [...]