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Aust N Z J Obstet Gynaecol. 2007 Dec;47(6):475-6.

A new formula for summarising the pregnancy history.

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  • 1Mother and Child Health Research, La Trobe University, Bundoora, Victoria, Australia.


Pregnancy history formulae usually provide only summaries of numbers of pregnancies and births. Different pregnancy outcomes and their sequence are not captured. A new pregnancy history formula is proposed where one number provides information on parity, gravidity, sequence, gestation and outcome of pregnancies. For instance, 914 represents the history of a woman having had three pregnancies, where '9' represents a term first birth, '1', a miscarriage and '4', a preterm perinatal death in the third pregnancy. This formula could be used in medical records or perinatal databases.

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