Pregnancy—estimated duration of pregnancy at the first antenatal care visit, total completed weeks N[N]
Data Element Attributes
Identifying and definitional attributes | |
Metadata item type: | Data Element |
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Short name: | Pregnancy duration at the first antenatal care visit |
Synonymous names: | Estimated gestational age in completed weeks at first antenatal care visit |
METEOR identifier: | 732908 |
Registration status: | Health, Standard 03/12/2020 Indigenous, Standard 14/07/2021 Tasmanian Health, Standard 24/03/2023 |
Definition: | The estimated duration of a pregnancy in total completed weeks on the day of the first antenatal care visit. |
Data Element Concept: | Pregnancy—estimated duration of pregnancy at the first antenatal care visit |
Value Domain: | Total weeks N[N] |
Source and reference attributes | |
Submitting organisation: | Australian Institute of Health and Welfare |
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Data element attributes | |||||||||||||||||
Collection and usage attributes | |||||||||||||||||
Guide for use: | The day of the first antenatal care visit is the day of the first contact with a midwife, clinician, or other recognised health professional where antenatal care was provided. It does not include a visit where the sole purpose of contact is to confirm the pregnancy, or those contacts that occurred during the pregnancy that related solely to non-pregnancy related issues. It does not include a first contact after the onset of labour. Antenatal care visits are attributed to the pregnant female. The duration of a pregnancy on the day of the first antenatal care visit is the same as the best estimate of gestational age of the fetus or baby. There may be one or more revisions of pregnancy duration after the first antenatal care visit if a better estimate of gestational age of the fetus or baby becomes available. Revised estimates are not usually applied retrospectively in antenatal records. The best estimate of pregnancy duration is used to record the gestation at later antenatal care visits and to assign gestational age to the baby recorded at the time of birth. If gestational age has been revised, a similar revision will need to be applied to earlier recorded estimates of pregnancy duration. Alternatively, the pregnancy duration on a specified day can be calculated from the gestational age of the baby at birth. | ||||||||||||||||
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Collection methods: | To be collected at any time during the pregnancy or birth episode after the best estimate of gestational age has been determined. The method of data collection will usually be from health records of pregnancy and/or birth. The valid range of completed weeks for pregnancy duration at the first antenatal care visit is 3 to 46 weeks. | ||||||||||||||||
Source and reference attributes | |||||||||||||||||
Submitting organisation: | Australian Institute of Health and Welfare | ||||||||||||||||
Relational attributes | |||||||||||||||||
Related metadata references: | Supersedes Pregnancy—estimated duration of pregnancy at the first antenatal care visit, total completed weeks N[N] Health, Superseded 03/12/2020 Indigenous, Superseded 14/07/2021 Tasmanian Health, Superseded 24/03/2023 See also Product of conception—gestational age, total completed weeks N[N] Health, Standard 12/12/2018 Tasmanian Health, Standard 03/07/2020 | ||||||||||||||||
Implementation in Data Set Specifications: | Aboriginal and Torres Strait Islander specific primary health care NBEDS December 2023 Indigenous, Standard 25/02/2024 Implementation start date: 01/07/2023 Implementation end date: 31/12/2023 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Aboriginal and Torres Strait Islander specific primary health care NBEDS June 2024 Indigenous, Qualified 17/04/2024 Implementation start date: 01/01/2024 Implementation end date: 30/06/2024 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS December 2020 Indigenous, Superseded 03/07/2022 Implementation start date: 01/07/2020 Implementation end date: 31/12/2020 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS December 2021 Indigenous, Superseded 12/06/2023 Implementation start date: 01/07/2021 Implementation end date: 31/12/2021 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS December 2022 Indigenous, Superseded 18/12/2023 Implementation start date: 01/07/2022 Implementation end date: 31/12/2022 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS June 2021 Indigenous, Superseded 06/11/2022 Implementation start date: 01/01/2021 Implementation end date: 30/06/2021 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS June 2022 Indigenous, Superseded 27/08/2023 Implementation start date: 01/01/2022 Implementation end date: 30/06/2022 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Indigenous-specific primary health care NBEDS June 2023 Indigenous, Superseded 25/02/2024 Implementation start date: 01/01/2023 Implementation end date: 30/06/2023 Conditional obligation: Reporting against this data element is conditional on a 'CODE 2 Female' response to 'Person—sex, code X'. Data are only provided to the AIHW for females who gave birth during the 12 months up to the census date. Data are provided to the AIHW relating to live births, and still births if the birthweight was at least 400 grams or the gestational age was 20 weeks or more. Perinatal NMDS 2021–22 Health, Superseded 17/12/2021 Implementation start date: 01/07/2021 Implementation end date: 30/06/2022 DSS specific information: This data element is recorded for the mother only. The following code has been agreed by the National Perinatal Data Development Committee (NPDDC) as a supplementary code for use in the Perinatal NMDS:
Perinatal NMDS 2022–23 Health, Superseded 09/12/2022 Implementation start date: 01/07/2022 Implementation end date: 30/06/2023 DSS specific information: This data element is recorded for the mother only. The following code has been agreed by the National Perinatal Data Development Committee (NPDDC) as a supplementary code for use in the Perinatal NMDS:
Perinatal NMDS 2023–24 Health, Superseded 06/12/2023 Implementation start date: 01/07/2023 Implementation end date: 30/06/2024 DSS specific information: This data element is recorded for the mother only. The following code has been agreed by the National Perinatal Data Development Committee (NPDDC) as a supplementary code for use in the Perinatal NMDS:
Perinatal NMDS 2024–25 Health, Standard 06/12/2023 Implementation start date: 01/07/2024 Implementation end date: 30/06/2025 DSS specific information: This data element is recorded for the mother only. The following code has been agreed by the National Perinatal Data Development Committee (NPDDC) as a supplementary code for use in the Perinatal NMDS:
Tasmanian Perinatal Data Set - 2023 Tasmanian Health, Standard 23/11/2023 Implementation start date: 01/07/2023 Implementation end date: 30/06/2024 | ||||||||||||||||
Implementation in Indicators: |
Used as Numerator
First Nations-specific primary health care: PI13a-Number of female First Nations regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2023 Indigenous, Standard 25/02/2024 First Nations-specific primary health care: PI13a-Number of female First Nations regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2024 Indigenous, Qualified 17/04/2024 First Nations-specific primary health care: PI13b-Proportion of female First Nations regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2023 Indigenous, Standard 25/02/2024 First Nations-specific primary health care: PI13b-Proportion of female First Nations regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2024 Indigenous, Qualified 17/04/2024 Indigenous-specific primary health care: PI13a-Number of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2021 Indigenous, Superseded 12/06/2023 Indigenous-specific primary health care: PI13a-Number of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2022 Indigenous, Superseded 18/12/2023 Indigenous-specific primary health care: PI13a-Number of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2021 Indigenous, Superseded 06/11/2022 Indigenous-specific primary health care: PI13a-Number of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2022 Indigenous, Superseded 27/08/2023 Indigenous-specific primary health care: PI13a-Number of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2023 Indigenous, Superseded 25/02/2024 Indigenous-specific primary health care: PI13a-Number of Indigenous regular clients who have their first antenatal care visit within specified periods, December 2020 Indigenous, Superseded 03/07/2022 Indigenous-specific primary health care: PI13b-Proportion of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2021 Indigenous, Superseded 12/06/2023 Indigenous-specific primary health care: PI13b-Proportion of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, December 2022 Indigenous, Superseded 18/12/2023 Indigenous-specific primary health care: PI13b-Proportion of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2021 Indigenous, Superseded 06/11/2022 Indigenous-specific primary health care: PI13b-Proportion of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2022 Indigenous, Superseded 27/08/2023 Indigenous-specific primary health care: PI13b-Proportion of female Indigenous regular clients who gave birth within the previous 12 months, and who have their first antenatal care visit within a specified period, June 2023 Indigenous, Superseded 25/02/2024 Indigenous-specific primary health care: PI13b-Proportion of Indigenous regular clients who have their first antenatal care visit within specified periods, December 2020 Indigenous, Superseded 03/07/2022 National Core Maternity Indicators: PI 02–Antenatal care visits in the first trimester for all females giving birth, 2023 Health, Standard 14/07/2023 National Core Maternity Indicators: PI 02–Antenatal care visits in the first trimester for all females giving birth, 2024 Health, Recorded 21/02/2024
Used as Denominator
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