Birthweight

Identifying and definitional attributes
Metadata item type:	Glossary Item
METEOR identifier:	733258
Registration status:	Health, Standard 03/12/2020 Tasmanian Health, Standard 24/12/2021
Definition:	The first weight of a live born or stillborn baby obtained after birth. The World Health Organization further defines the following categories: extremely low birthweight: less than 1,000 grams (up to and including 999 grams), very low birthweight: less than 1,500 grams (up to and including 1,499 grams), low birthweight: less than 2,500 grams (up to and including 2,499 grams).
Context:	Perinatal

Collection and usage attributes
Comments:	The definitions of low, very low, and extremely low birthweight do not constitute mutually exclusive categories. Below the set limits they are all-inclusive and therefore overlap (i.e. low includes very low and extremely low, while very low includes extremely low). For live births, birthweight should preferably be measured within the first hour of life before significant postnatal weight loss has occurred. While statistical tabulations include 500 gram groupings for birthweight, weights should not be recorded in those groupings. The actual weight should be recorded to the degree of accuracy to which it is measured.
Source and reference attributes
Submitting organisation:	National Perinatal Data Development Committee
Reference documents:	World Health Organization 2004. International Statistical Classification of Diseases and Related Health Problems, 10th Revision (ICD-10), 2nd edn. Geneva: World Health Organization.
Relational attributes
Related metadata references:	See also Birthweight Health, Superseded 03/12/2020 Indigenous, Superseded 14/07/2021 Tasmanian Health, Standard 03/07/2020 Supersedes Birthweight Health, Superseded 03/12/2020 Indigenous, Standard 02/04/2019 Tasmanian Health, Standard 24/06/2020
Metadata items which use this glossary item:	Birth status code N Health, Standard 03/12/2020 Indigenous, Standard 14/07/2021 Birthweight recorded indicator Health, Standard 12/12/2018 Indigenous, Standard 02/04/2019 Live birth Health, Standard 03/12/2020 Indigenous, Standard 14/07/2021 Tasmanian Health, Standard 24/12/2021 Perinatal NBEDS 2021–22 Health, Superseded 17/12/2021 Perinatal NBEDS 2022–23 Health, Standard 17/12/2021 Perinatal NMDS 2021–22 Health, Superseded 17/12/2021 Perinatal NMDS 2022–23 Health, Standard 17/12/2021 Person—birthweight recorded indicator Health, Standard 12/12/2018 Indigenous, Standard 02/04/2019 Person—birthweight recorded indicator, yes/no code N Health, Standard 12/12/2018 Indigenous, Standard 02/04/2019 Product of birth—birth order, code N Health, Standard 03/12/2020 Product of birth—birthweight, code N Indigenous, Standard 14/07/2021 Product of birth—birthweight, total grams N[NNN] Health, Standard 03/12/2020 Stillbirth (fetal death) Health, Standard 03/12/2020 Indigenous, Standard 14/07/2021 Tasmanian Health, Standard 24/12/2021