Low agreement was found between pharmacy data and physician reported use of hospital-administered antenatal corticosteroids.

Objective: To evaluate physicians' recall accuracy on starting year of routine use of antenatal corticosteroids (ACS) to women facing imminent preterm delivery.

Study Design And Setting: Starting year of routine treatment with ACS was evaluated by a questionnaire mailed to all 52 Swedish maternity wards. The information was compared with that obtained from a telephone interview with physicians involved in the introduction of routine ACS and with pharmacy data.

Infant morbidity following amniocentesis and chorionic villus sampling for prenatal karyotyping.

Objective: To investigate whether amniocentesis and chorionic villus sampling increase the risk of postural deformities, limb reduction defects, respiratory problems in the newborn, fetal and infant mortality, prematurity, low birthweight and fetal distress, and to investigate the impact of gestational length at the time of the procedure.

Design: A population-based cohort study.

Setting: Sweden, 1991-1996.

Maternal complications following amniocentesis and chorionic villus sampling for prenatal karyotyping.

Objective: To investigate whether amniocentesis and chorionic villus sampling increase the risk of bleeding, placental abruption, complications related to amniotic cavity and membranes, abnormal labour, operative deliveries and to investigate the impact of gestational length at the time of the procedure.

Design: A population-based cohort study.

Setting: Sweden, 1991-1996.