This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Parity score

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

A score designed to confuse those new to obs and gynae, the parity score imparts information on the past obstetric history. It is written:

  • para X + Y, where X is the number of pregnancies producing live births and Y is the number of losses before 24 weeks (such as terminations, spontaneous abortions, ectopic pregnancies or moles).

Thus: twins count as 1 X, a live birth at any time counts as 1 X, and a stillbirth after 24 weeks counts as 1 X, an abortion before 24 weeks counts as 1 Y.

The gravida number is best described as the total number of pregnancies, including the present one.

Related pages

Create an account to add page annotations

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