A total of 589 women applying for termination of pregnancy completed a questionnaire about female anatomy and sexual information (46% replies). Of these 415 women had the pregnancy terminated in Hvidovre Hospital, Copenhagen (high abortion rate) and 174 in Aalborg Hospital in the northern Jutland (low abortion rate). The two groups showed great agreement in the replies. In 14% the sexual information was not acceptable and, especially among women under 20 years, the sexual information was poor. Only 13% of the women with poor sexual information considered that their knowledge should be increased, compared to 26% women with better knowledge. Most women received their first sexual information from their mothers and the general practitioners were the most used for further information. Most women were satisfied with the information given by their mothers and general practitioners. In conclusion, the present study did not explain the observed difference in abortion rate between the two regions.