Two surveys were conducted among pregnant women throughout England, be
fore (n = 625) and after (n = 607) a mass media campaign on smoking an
d pregnancy targeted at women aged 15-24 years, in the social grade C2
DE. The majority of the post-campaign sample recalled having seen at k
ast one of the campaign's series of press advertisements. There was a
significant increase among this sample in those considering smoking to
be very dangerous to the unborn child, in those understanding the ter
m passive smoking and in those considering passive smoking to be very
dangerous. During the campaign there was a 14% increase in the number
of calls to a cessation helpline from pregnant women. Over the campaig
n there were no significant changes in smoking prevalence and consumpt
ion among pregnant women or partners or in the numbers of partners off
ering suggestions to pregnant women about their smoking behaviour.