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Mothers and babies

Subtopic: Demographics

Description


Number of liveborn babies born to Indigenous mothers


Data source


National Perinatal Data Collection (NPDC) for the 3 year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) 2016 regions: Indigenous Regions (IREGs); States and Territories; Australia.


Suppression rules


Numbers less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Notes


The data associated with each record in the NPDC include the SA2 of residence of the mother. The SA2 variable was used to aggregate and concord data as necessary to IREGs, and States/Territories.


In the NPDC, data for 2016 are based on the 2011 ASGS, while data for 2017 and 2018 are based on the 2016 ASGS. For this analysis, 2016 data for SA2s were concorded from 2011 to 2016 ASGS boundaries before being aggregated with 2017 and 2018 SA2 data. These data were aggregated and apportioned to the reported region types.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of liveborn babies born to Indigenous mothers


Data source


National Perinatal Data Collection (NPDC) for the 3 year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) 2016 regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


The denominator for the percentages excludes mothers whose Indigenous status were not stated.


NPDC 2016 data for Statistical Area Level 2 (SA2) regions based on the 2011 ASGS were reassigned to SA2 regions based on the 2016 ASGS. These data combined with NPDC 2017 and NPDC 2018 were then aggregated and apportioned to the reported region types.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of Indigenous mothers who were aged under 20 at the time of giving birth


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


The denominator for the percentages excludes Indigenous mothers with age not stated.


NPDC 2016 data for Statistical Area Level 2 (SA2) regions based on the 2011 ASGS were reassigned to SA2 regions based on the 2016 ASGS. These data combined with NPDC 2017 and NPDC 2018 were then aggregated and apportioned to the reported region types.


Any Indigenous teenagers who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times as long as they were aged under 20 at the time of giving birth. Indigenous teenagers who gave birth to multiple babies following one pregnancy were counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Number of Indigenous liveborn babies


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Numbers less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Notes


NPDC 2016 data for Statistical Area Level 2 (SA2) regions based on the 2011 ASGS were reassigned to SA2 regions based on the 2016 ASGS. These data combined with NPDC 2017 and NPDC 2018 were then aggregated and apportioned to the reported region types.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW.  Viewed 24 June 2020.

Description


Percentage of births to Indigenous mothers by mothers’ age at delivery


Age categories: <20, 20–24, 25–29, 30–34, and 35+


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous Regions (IREGs); States and Territories; Australia


Suppression rule


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of the percentages based on small denominator.


Notes


The denominator for the percentages excludes Indigenous mothers with age not stated.


NPDC 2016 data for Statistical Area Level 2 (SA2) regions based on the 2011 ASGS were reassigned to SA2 regions based on the 2016 ASGS. These data combined with NPDC 2017 and NPDC 2018 were then aggregated and apportioned to the reported region types.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Indigenous women who gave birth to multiple babies following one pregnancy were counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of births to women by mothers’ age at delivery and Indigenous status


Age categories: <20, 20–24, 25–29, 30–34, and 35+


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous Regions (IREGs); States and Territories; Australia


Suppression rule


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of the percentages based on small denominator.


Notes


The denominator for the percentages excludes Indigenous and non-Indigenous mothers with age not stated.


NPDC 2016 data for Statistical Area Level 2 (SA2) regions based on the 2011 ASGS were reassigned to SA2 regions based on the 2016 ASGS. These data combined with NPDC 2017 and NPDC 2018 were then aggregated and apportioned to the reported region types.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Subtopic: Antenatal care

Description


Percentage of Indigenous mothers who gave birth and attended the specified number of antenatal care visits


Antenatal visit categories: 0 visit, 1 visit, 2–4 visits, 5 or more visits


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


Data are for women who gave birth at 32 weeks or more gestation (excluding unknown gestation).


The denominator for the percentages excludes mothers with unknown status of attending antenatal care in the 1st trimester.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Average number of antenatal care visits for Indigenous mothers during pregnancy


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


None.


Notes


Data are for women who gave birth at 32 weeks or more gestation (excluding unknown gestation). Excludes mothers whose number of antenatal care visits was not stated.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Age-standardised percentage of mothers who attended antenatal care in the 1st trimester of their pregnancy (that is, before 14 weeks gestational age), by Indigenous status  


Data source


National Perinatal Data Collection (NPDC) for the in the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Age-standardised rates have been suppressed if: the denominator for any age-specific rate was less than 100; if the numerator for each age group was less than 5; or the total number of all mothers was less than 30.


Notes


Antenatal care is a planned visit between a pregnant woman and a midwife or doctor to assess and improve the wellbeing of the mother and baby throughout pregnancy. It does not include visits where the sole purpose is to confirm the pregnancy. Also known as an antenatal visit.


Age-standardised rates by Indigenous status are reported for the following region types: States and Territories, and Australia. For other region types (e.g. IREG), numbers are generally too small to support reliable age-standardisation.


Age-standardised rates were directly age-standardised to the Australian female population aged 15–44 as at 30 June 2001 using 5-year age groups (i.e. 15–19, 20–24, 25–29, 30–34, 35–39, 40–44).


Women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


 


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Duration of pregnancy (in weeks) at the 1st antenatal care visit for Indigenous mothers, expressed as a percentage of all Indigenous mothers


Duration of pregnancy categories: <14 weeks; 14–19 weeks; 20 weeks or more; no antenatal care visit


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


The duration of pregnancy in completed weeks is calculated from the date of the first day of a woman’s last menstrual period and her baby’s date of birth; or via ultrasound; or derived from clinical assessment during pregnancy or from examination of the baby after birth.


The denominator for the percentages excludes mothers for whom duration of pregnancy at the 1st antenatal care visit was not stated.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Subtopic: Smoking

Measure: Smoking during pregnancy by Indigenous status


Description


Age-standardised percentage of mothers who smoked tobacco during pregnancy, by Indigenous status


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Age-standardised rates have been suppressed if: the denominator for any age-specific rate was less than 100; if the numerator for each age group was less than 5; or the total number of all mothers  was less than 30.


Notes


All valid data for women with a recorded smoking status who gave birth in 2016, 2017 and 2018 were included.


The denominator for the percentages excludes mothers whose smoking status during pregnancy was not stated.


Age-standardised rates by Indigenous status are reported for the following region types: States and Territories, and Australia. For other region types (e.g. IREG), numbers are too small to support reliable age-standardisation.


Age-standardised rates were directly age-standardised to the Australian female population aged 15–44 as at 30 June 2001 using 5-year age groups (i.e. 15–19, 20–24, 25–29, 30–34, 35–39, 40–44).


Women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of Indigenous mothers who gave birth and smoked tobacco during the first 20 weeks of pregnancy


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for women with a recorded smoking status who gave birth in 2016, 2017 and 2018 were included.


The denominator for the percentages excludes mothers for whom smoking status in the 1st 20 weeks of pregnancy was not stated.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Subtopic: BMI

Description


Percentage of Indigenous mothers gave birth and were in the specified BMI group pre-pregnancy


BMI categories: underweight (<18.5); normal weight (18.5–24.9); overweight (25–29.9); obese (>=30).


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for women gave birth in 2016, 2017, and 2018 were included.


The denominator for the percentages excludes mothers whose BMI was not stated.


BMI data are based on a combination of measured and self-reported data. The methods used for data collection in states and territories is not uniform. Care must be taken when comparing across jurisdictions.


Indigenous women who gave birth multiple times following multiple pregnancies during the three years from 2016 to 2018 were counted multiple times. Women who gave birth to multiple babies following one pregnancy were only counted once.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Subtopic: Birthweight

Description


Percentage of Indigenous singleton liveborn babies, by birthweight categories


Birthweight categories: Healthy birthweight (2500–4499 grams), low birthweight (< 2,500 grams)


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for liveborn singleton babies were included.


The denominator for the percentages excludes babies whose birthweight was not stated.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of Indigenous singleton liveborn babies who had a low birthweight (< 2,500 grams)


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for liveborn singleton babies were included.


The denominator for the percentages excludes babies whose birthweight was not stated.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of singleton liveborn babies who had a low birthweight (< 2,500 grams), by Indigenous status


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for liveborn singleton babies were included.


The denominator for the percentages excludes babies whose birthweight was not stated.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Subtopic: Preterm births

Description


Percentage of Indigenous liveborn babies who were born preterm (with a gestational age of less than 37 weeks)


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for liveborn babies were included.


The denominator for the percentages excludes babies with preterm status not stated.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.

Description


Percentage of liveborn babies who were born preterm (with gestational age less than 37 weeks), by Indigenous status


Data source


National Perinatal Data Collection (NPDC) for the 3-year period 1 January 2016 to 31 December 2018 (2016–2018)


Region types reported


Australian Statistical Geography Standard (ASGS) regions: Indigenous regions (IREGs); States and Territories; Australia.


Suppression rules


Percentages with a numerator of less than 5 have been suppressed for confidentiality reasons. Consequential suppression has also been applied where required to prevent back-calculation.


Data have been suppressed if the denominator for the percentage was less than 100, due to concerns about the reliability of percentages based on small denominator.


Notes


All valid data for liveborn babies were included.


The denominator for the percentages excludes babies with preterm status not stated.


Indigenous status is based on the baby’s Indigenous status.


Reference material


AIHW 2020. Australia's mothers and babies 2018—in brief. Cat. no. PER 108. Canberra: AIHW. Viewed 24 June 2020.


AIHW 2020. National Perinatal Data Collection, 2018: Quality Statement. Canberra: AIHW. Viewed 24 June 2020.