• During fetal life, future eggs reach a peak of 7 million around the 20th week of gestation, dropping to 2 million by the time of birth.

• During her reproductive life, a woman ovulates an average of 400 times.

• A young woman who has sex during her fertile period has a 20% chance of getting pregnant in that cycle.

• One in six couples has difficulty conceiving:

- 30% are due to female causes;

- 30% are due to male causes;

- 20% are due to mixed causes;

- 20% have no identifiable cause.

• Approximately 10-15% of clinically recognized pregnancies result in spontaneous abortion.

• The incidence of twins in the general population is 1%.

• 6 to 8% of fetuses are born before the end of the pregnancy.

• The rate of fetal malformations in the general population is 3%.