Maternal smoking during pregnancy and asthma during the first year of life: a comparative study between smokers and nonsmoker mothers.

Background: We investigated the relationship between maternal smoking in pregnancy and health care problems in the offspring during the first year of life, particularly asthma.

Material And Methods: A cohort of 648 consecutive infants born at term and alive at Hospital de Sagunto (Valencia, Spain) over one year period was followed for 12 months. Clinical data of the infants were prospectively collected from the database of ambulatory medical records (ABUCASIS) of the Valencia health system.