Fertili - Daily probability of conception among healthy subjects

Data come from a multicentre study which has produced a database of more than 7000 menstrual cycles contributed by 881 women. It provides improved knowledge on length and location of the “fertile window” and the pattern and level of daily conception probability. The day of ovulation was identified in each cycle from records of basal body temperature and mucus symptoms. The investigation was planned as a prospective cohort study conducted to determine the daily probability of conception among healthy subjects. From 1992 through 1996, 782 women were recruited with the collaboration of seven European centres. Data from an additional 99 subjects were also included retrospectively. These data came from a prospective investigation carried out in Auckland, New Zealand, in 1979-85.