This site is intended for healthcare professionals

Sign in
Go to /sign-in page

You can view 5 more pages before signing in

Predisposing factors for multiple pregnancy

Authoring team

  • overall background rates (UK)
  • twins 1 in 105 births
  • triplets 1 in 10 000 births
  • quadruplets 1 in 500 000 births

  • maternal age:
    • < 20 years, 6.4 per 1000 births
    • > 40 years, 16.8 per 1000 births

  • parity
    • para 0, 9.8 per 1000 births
    • para 7, 18.0 per 1000 births

  • family history: maternal, binovular, 5-15% incidence

  • race:
    • Afro-carribean 1 in 60 twins
    • Japanese 1 in 154 twins

  • Induced ovulation:
    • Human ant. pit. 44% multiple
    • purified HMG and HCG 10% multiple
    • clomiphene 10% multiple

Create an account to add page annotations

Create a free account

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.