[Occupational activities of pregnant women, prenatal care and pregnancy outcome].

The study of a national sample of births showed that, in 1976, more than 50% of French women worked during pregnancy. Working during pregnancy was, on the whole, associated with better antenatal care, and better outcome of pregnancy. This relationship remained after taking into account the more favourable social characteristics of working women. Nonetheless, physically hard working conditions were associated with a high risk of preterm delivery.