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. 2007 Jun;114(6):715-20.
doi: 10.1111/j.1471-0528.2007.01327.x.

Placenta weight percentile curves for singleton deliveries

J M D Thompson  1 , L M Irgens, R Skjaerven, S Rasmussen
Affiliations

Placenta weight percentile curves for singleton deliveries

J M D Thompson et al. BJOG. 2007 Jun.

Abstract

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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