National Core Maternity Indicators: PI 10–Small babies among births at or after 40 weeks gestation, 2019

Collection and usage attributes

The number of babies born at or after 40 weeks gestation who weighed less than 2,750 grams at birth, divided by the number of babies born at or after 40 weeks gestation, and multiplied by 100.

A birth is defined as an event in which a baby comes out of the uterus after a pregnancy of at least 20 weeks gestation or weighing 400 grams or more.

Births included are those for babies born at or after 40 weeks gestation. This includes stillborn babies and babies from a multiple birth.

Births excluded are those for babies born before 40 completed weeks gestational age, that is before 40 weeks and 0 (zero) days.

Gestational age is reported as completed weeks.

100 × (Numerator ÷ Denominator)

The number of babies born at or after 40 weeks gestation who weighed less than 2,750 grams at birth.

The number of babies born at or after 40 weeks gestation.

• Year of birth
• State or territory of birth
• Mother's age at birth
• Hospital annual number of births
• Hospital sector
• Mother's smoking status during pregnancy
• Remoteness category (from mother's area of usual residence)
• Disadvantage quintile (from mother's area of usual residence)
• Mother's country of birth
• Indigenous status of mother
• Sex of baby
• Primary Health Network (from mother's area of usual residence)
• Statistical local area 3 (from mother's area of usual residence)

Data elements are from the Perinatal National Minimum Data Set (NMDS) or have been provided as voluntary non-standardised items by the states and territories. Records with data that are missing, not stated or not interpretable have been excluded from the denominator.

Modified from Australian Council on Healthcare Standards (ACHS) Indicator 8.1: Babies with severe intrauterine growth restriction. This ACHS indicator is based on the definition by Women's Healthcare Australasia Core Maternity Indicators Project (WHA 2007).

Representational attributes

N[NN.N]

Data source attributes

Source and reference attributes

Australian Institute of Health and Welfare

ACHS (The Australian Council on Healthcare Standards, Health Services Research Group, University of Newcastle) 2014. The Australasian Clinical Indicator Report: 2006-2013. 15th edn. Sydney: ACHS. Viewed 9 April 2018, https://www.achs.org.au/media/88679/clinical_indicator_report_2006_2013.pdf.

WHA (Women's Healthcare Australasia) 2007. Supporting excellence in maternity care: the core maternity indicators project: findings from the core maternity indicators project. Canberra: WHA.

Relational attributes