[Epidemiology and Risk Factors of Smoking During Pregnancy (Excluding Coaddictions) - CNGOF-SFT Expert Report and Guidelines for Smoking Management during Pregnancy].

World tobacco consumption during pregnancy is estimated to be 1.7% (95% CI: 0.0-4.5). Among the 50 European countries evaluated, France ranks 7th among the countries most affected by active smoking during pregnancy. In the 2016 National Perinatal Survey, 30.0% of women reported active smoking before they started their pregnancy and 16.6% still smoked in the 3rd trimester of pregnancy. There are also disparities in consumption between regions in France (24.0% of pregnant women with active smoking in the 3rd trimester of pregnancy in Brittany against 9.4% in the Paris region and 5.2% in the French departments and French overseas territories). A young age, a low level of education, a low socioeconomic level, primiparity, a geographical origin of mainland France, unemployment, a smoking partner, no partner or a depression are risk factors for smoking during pregnancy. Multiparity is a risk factor for failure of smoking cessation during pregnancy. For health professionals in contact with women of childbearing age, it is recommended to identify a tobacco consumption in women or their partners before pregnancy or as early as possible during pregnancy.