Perined is a joint effort of five organisations of professionals involved in perinatal care in the Netherlands: midwives, general practitioners, gynaecologists, paediatricians and pathologists. Main activities are perinatal registry and perinatal audit in the Netherlands, focused on the improvement of perinatal care. Nearly all childbirths at home as well as in a clinical setting are registered in the perinatal registry of Perined. See for more information: .

The charts were derived from data on Dutch infants who were born and registered in the perinatal database of Perined, between 2000 and 2014. In contrast to the 2008 PRN/Perined birth weight charts, all infants with risk factors for deviant fetal growth were excluded. Among the excluded records were mothers with hypertensive disorders, diabetes or other medical conditions, substance-abusing mothers, pregnancies complicated by placental abnormalities or intrauterine infections, multiple gestations, and infants with congenital malformations. Infants born after induction of labor or elective caesarean section were also excluded. The remaining low-risk population (n=1.629.776) served as the reference population for the new birth weight charts, which intend to reflect the optimal birth weight of infants born at the corresponding gestational age. The charts are stratified by gender; because of different risk profiles the charts are no longer stratified by parity and Hindustani ethnicity, in contrast to the former PRN/Perined-charts.

These birth weight charts are developed by Liset Hoftiezer, supported by a taskforce with the following members (in alphabetical order): Joyce Dijs-Elsinga, Jeroen van Dillen, Michel Hof, Marije Hogeveen, Chantal Hukkelhoven, Karline van de Kamp, Richard van Lingen, Alieke de Roon-Immerzeel, Rosalinde Snijders, Viki Verfaille, Ger de Winter en Koos Zwinderman.

The birth weight charts were developed with financial support from the Isala Innovation and Science fund as well as Nutricia Early Life Nutrition. The financial contribution concerned the researchers place. There has been no interference with the content or findings of the project.

The “PerinedHoftiezer Graph” app is created by Glamorous Goat. Visit for more information.

© 2017 Perined
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What's New

*Weight up to 5500 grams now possible to enter
*Small textual changes
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February 6, 2018
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