APPENDIX DIFFERENCES BETWEEN COLLECTIONS
BIRTH REGISTRATIONS COMPARED TO THE PERINATAL DATA COLLECTION
Birth registrations data in this publication are not the only births data available in Australia. The Australian Institute of Health and Welfare (AIHW) also collects birth data from midwives and other health professionals who attend births. These data are published annually in Australia's Mothers and Babies.
As information from these two collections are from different sources, the number of live births may differ. Births from the AIHW National Perinatal Data Collection are released on a year of occurrence basis, while registered births from the ABS Birth Registrations collection are predominantly released on a year of registration basis. The AIHW National Perinatal Data Collection reported the occurrence of 310,330 live births in Australia in 2014 (the latest available data), 3.5% more than the 299,697 births registered in the same year. Since 1998 the size of the difference between the two collections has varied between 0.05% and 3.5%.
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