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Placenta weight percentile curves for singleton deliveries

  1. JMD Thompson1,*,
  2. LM Irgens2,
  3. R Skjaerven2,
  4. S Rasmussen2

Article first published online: 16 MAY 2007

DOI: 10.1111/j.1471-0528.2007.01327.x

Issue

BJOG: An International Journal of Obstetrics & Gynaecology

BJOG: An International Journal of Obstetrics & Gynaecology

Volume 114, Issue 6, pages 715–720, June 2007

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How to Cite

Thompson, J., Irgens, L., Skjaerven, R. and Rasmussen, S. (2007), Placenta weight percentile curves for singleton deliveries. BJOG: An International Journal of Obstetrics & Gynaecology, 114: 715–720. doi: 10.1111/j.1471-0528.2007.01327.x

Author Information

  1. 1

    Department of Paediatrics, University of Auckland, Auckland, New Zealand

  2. 2

    The Medical Birth Registry of Norway, Locus of Registry Based Epidemiology, University of Bergen and Norwegian Institute of Public Health, Bergen, Norway

*Dr JMD Thompson, Department of Paediatrics, University of Auckland, Private Bag 92019, Auckland, New Zealand. Email j.thompson@auckland.ac.nz

Publication History

  1. Issue published online: 16 MAY 2007
  2. Article first published online: 16 MAY 2007
  3. Accepted 3 February 2007.

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Keywords:

  • Birthweight;
  • percentiles;
  • placental weight;
  • population;
  • singleton

Objective  To produce population-based, gender- and gestational-age-specific centile curves for placental weight.

Design  Population study.

Setting  Medical Birth Registry of Norway

Population  All singleton live births in Norway from 1 January 1999 to 31 December 2002.

Methods  In a cohort of children born in Norway, placental weights and the ratio of the birthweight to the placental weight were analysed to produce percentile curves.

Main outcome measures  Placental weight, birthweight-to-placental weight ratio.

Results  Tables and figures are presented for placental percentiles curves according to gestational age and gender. Also, tables and figures are presented for the ratio of birthweight to placental weight.

Conclusions  To our knowledge, this is the first time that population percentile curves have been produced for placental weights and hence for the ratio of birthweight to placental weight. These percentile curves may act as a reference for other populations as well until population-specific curves can be produced.

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