Datacollection
Women who consented to take part in the study were interviewed using a structured questionnaire, which was administered by a trained interviewer. The interviewers were all female medical students rotating through the Community Medicine and primary health care department of the Olabisi Onabanjo University Teaching Hospital during the period of the study and one resident doctor. The data were collected on antenatal clinic days by the interviewers at the respective PHC centres. All consenting pregnant women were interviewed individually over a 10 to 15minute period in a language they can understand before they are given any health talk. Completed questionnaires were scrutinized on the spot and at the end of the daily field sessions for immediate cor- rection of erroneous entry.