Identifying and definitional attributes | |
Metadata item type: | Data Element |
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Short name: | Birth order |
METEOR identifier: | 669962 |
Registration status: | Health, Superseded 12/12/2018 Tasmanian Health, Superseded 24/06/2020 |
Definition: | The sequential order of each baby of a multiple birth, as represented by a code. |
Context: | Required to analyse pregnancy outcome according to birth order and identify the individual baby resulting from a multiple birth pregnancy. Multiple births have higher risks of perinatal mortality and morbidity. Multiple birth pregnancies are often associated with obstetric complications, labour and delivery complications, higher rates of neonatal morbidity, low birthweight, and a higher perinatal death rate. |
Data Element Concept: | Birth—birth order |
Value Domain: | Birth order code N |
Data element attributes | |
Collection and usage attributes | |
Guide for use: | CODE 2 Second of a multiple birth Stillborns are counted such that, if twins were born, the first stillborn and the second live born, the second twin would be recorded as Code 2 'Second of a multiple birth' (and not Code 1 'Singleton or first of a multiple birth'). |
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Collection methods: | This data element should be collected routinely for all babies aged 28 days or less. |
Source and reference attributes | |
Submitting organisation: | National Perinatal Data Development Committee |
Relational attributes | |
Related metadata references: | Supersedes Birth—birth order, code N Health, Superseded 02/08/2017 Tasmanian Health, Superseded 24/06/2020 Has been superseded by Product of birth—birth order, code N Health, Superseded 03/12/2020 Tasmanian Health, Superseded 24/03/2023 |
Implementation in Data Set Specifications: | Perinatal NMDS 2018-19 Health, Superseded 12/12/2018 Implementation start date: 01/07/2018 Implementation end date: 30/06/2019 DSS specific information: Birth order is only assigned to births that are in scope for the Perinatal NMDS (i.e. births of at least 20 weeks gestation or 400g birth weight). In the case of multiple pregnancies, if one or more fetuses were removed from the uterus before 20 weeks gestation, for example, by abortion (spontaneous, induced or fetal reduction), they are not considered in the assignment of birth order for any remaining fetuses that are born. For example, in a twin pregnancy, where one fetus is aborted before 20 weeks, no birth order would be recorded for that twin. If the remaining twin is born and is in scope for the Perinatal NMDS, then their birth order would be recorded as ‘1 Singleton or first of a multiple birth’. If both twins are born and are in scope for the Perinatal NMDS, the first twin will be assigned a birth order of ‘1 Singleton or first of a multiple birth’ and the second twin will be assigned a birth order of ‘2 Second of a multiple birth’. In the case of multiple births, this item should be recorded for each baby born. |