Web update: Child and maternal health in 2014–2016 - Technical Note - Indicator specifications

Web update: Child and maternal health in 2014–2016

Indicator specifications

Infant and young child mortality rates

This specification applies to the following indicators:

  • Number of deaths among infants aged less than 1 year per 1,000 live births
  • Number of deaths among infants and young children aged less than 5 years per 1,000 live births
Data source
Data sources
  • National Mortality Database (NMD), 2014–2016
  • ABS Birth Registrations collection, 2014–2016
Indicator description and calculation
Numerator

Infants: Number of deaths from birth to less than 1 year

Infants and young children: Number of deaths from birth to less than 5 years

Denominator

Total number of live births

Calculation

Crude rate: (Numerator ÷ denominator) × 1000, reported at 1 decimal place

Age-standardised rates: Numerator ÷ denominator (age-adjusted)

Geographic disaggregation

Statistical Area Level 2 (SA2) of usual residence reported at the following levels:

  • Primary Health Network (PHN) area
  • Statistical Area Level 3 (SA3)
Suppression Mortality rates for an area are suppressed for publication and marked as ‘NP’ if the total number of live births for the area is less than 100
Notes
  • Deaths are attributed to the area in which the infant or child usually resided, irrespective of where they died
  • Births are attributed to the area of usual residence of the mother, not location of birth
  • Deaths are reported by year of registration of death
  • Data for 2010 have been adjusted for the additional deaths arising from outstanding registrations of deaths in Queensland in 2010. For more details, refer to Technical note 3 in Causes of death, Australia, 2010 (ABS cat. no. 3303.0)

Percentage of live births that were of low birthweight

This specification applies to the following indicators:

  • Percentage of live births that were of low birthweight, all women
  • Percentage of live births that were of low birthweight, Aboriginal and Torres Strait Islander women
Data source
Data source National Perinatal Data Collection (NPDC), 2014–2016
Indicator description and calculation
Numerator

Number of low birthweight liveborn singleton babies
(low birthrate is defined as a birthweight less than 2,500 grams)

Denominator Total number of live births
Calculation

(Numerator ÷ denominator) x 100, reported at 1 decimal place

Aboriginal and Torres Strait Islander women: calculated using records where the Indigenous status of the mother is recorded as Aboriginal or Torres Strait Islander or both

Geographic disaggregation

Usual residence of mother reported at the following levels:

All women

  • Primary Health Network (PHN) area
  • Statistical Area Level 3 (SA3)

Aboriginal and Torres Strait Islander women

  • Statistical Area Level 4 (SA4)
Suppression Percentage for an area are suppressed for publication and marked as ‘NP’ if the total number of liveborn singleton babies for the area is less than 100
Notes
  • Data at the area level exclude births to Australian non-residents and women who could not be allocated because their usual residence was not stated or was not valid
  • Multiple births and stillbirths have been excluded

Percentage of women who gave birth and smoked during pregnancy

This specification applies to the following indicators:

  • Percentage of women who gave birth and smoked during pregnancy
  • Percentage of Aboriginal and Torres Strait Islander women who gave birth and smoked during pregnancy
Data source
Data source National Perinatal Data Collection (NPDC), 2014–2016
Indicator description and calculation
Numerator

Number of mothers who smoked tobacco at any stage of pregnancy

Denominator Total number of mothers with a stated smoking status
Calculation

(Numerator ÷ denominator) x 100, reported at 1 decimal place

Aboriginal and Torres Strait Islander women: calculated using records where the Indigenous status of the mother is recorded as either Aboriginal or Torres Strait Islander or both

Geographic disaggregation

Usual residence of mother reported at the following levels:

All women

  • Primary Health Network (PHN) area
  • Statistical Area Level 3 (SA3)

Aboriginal and Torres Strait Islander women

  • Statistical Area Level 4 (SA4)
Suppression Percentage for an area are suppressed for publication and marked as ‘NP’ if the number of mothers with a stated smoking status for the area is less than 100
Notes
  • Data at the area level exclude births to Australian non-residents and women who could not be allocated because their usual residence was not stated or was not valid
  • A woman’s smoking status during pregnancy is self-reported

Percentage of women who gave birth and had at least one antenatal visit in the first trimester of pregnancy

This specification applies to the following indicators:

  • Percentage of women who gave birth and had at least one antenatal visit in the first trimester
  • Percentage of Aboriginal and Torres Strait Islander women who gave birth and had at least one antenatal visit in the first trimester
Data source
Data source National Perinatal Data Collection (NPDC), 2014–2016
Indicator description and calculation
Numerator

Number of mothers who had an antenatal visit in the first trimester
(first trimester is defined as before 14 weeks’ gestation)

Denominator Total number of mothers with a recorded week of gestation at the first antenatal visit
Calculation

(Numerator ÷ denominator) x 100, reported at 1 decimal place

Aboriginal and Torres Strait Islander women: calculated using records where the Indigenous status of the mother is recorded as either Aboriginal or Torres Strait Islander or both

Geographic disaggregation

Usual residence of mother reported at the following levels:

All women

  • Primary Health Network (PHN) area
  • Statistical Area Level 3 (SA3)

Aboriginal and Torres Strait Islander women

  • Statistical Area Level 4 (SA4)
Suppression Percentage for an area are suppressed for publication and marked as ‘NP’ if the number of mothers with a recorded week of gestation at the first antenatal visit for the area is less than 100
Notes
  • Data at the area level exclude births to Australian non-residents and women who could not be allocated because their usual residence was not stated or was not valid
  • In WA and ACT, first antenatal visits that occur outside of the hospital may not be included, so these data should be interpreted with caution