Data Linkage: Perinatal Data

Perinatal data from some States and Territories have been linked to the Women's Health Australia survey data for the 1973-78, and 1989-95 cohorts, as well as a small number from the 1946-51 cohort. The 1989-95 cohort currently has its data linked to the Western Australian. Queensland and Tasmanian Perinatal data and the 1973-78 cohort has been linked to NSW, ACT, Western Australian, Queensland and Tasmanian Perinatal data. Those ALSWH women who did not opt out of data linkage had their perinatal data linked to the ALSWH survey data. Each State and Territory dataset is distinct in terms of its data contents and date ranges.

NSW and ACT

  • Perinatal data from NSW and ACT were linked in 2017.
  • The 1921-26 and 1989-95 cohorts were not linked.
  • Opt-outs included:
    • 796 women from the 1946-51 cohort, and
    • 725 women from the 1973-78 cohort.

ACT Perinatal Care

  • There were 255 records from 154 mothers.
  • The earliest record is May 1997 and the latest record is December 2012.

NSW Perinatal Data Collection

  • There were 6326 records for 2873 mothers.
  • The earliest record is January 1994 and the latest record is December 2015.

Queensland

  • Perinatal data (2004 individual mothers) from Queensland were linked in 2018.
  • The earliest date of birth was July 2007 and the latest record is December 2017.
  • Opt-outs included:
    • 738 women from the 1973-78 cohort, and
    • 45 opt-outs from the 1989-95 cohort.

Western Australia

  • Perinatal data (2989 records from 1442 individuals) from Western Australia were linked in 2018.
  • Opt-outs included:
    • 739 women from the 1973-78 cohort, and
    • 38 women from the 1989-95 cohort.
  • The 1921-26 and 1946-51 cohorts were not linked.
  • The earliest record is July 1989 and the latest record is December 2017.

Tasmania

  • Tasmanian Perinatal Collection, both Public and Private Hospital, data were linked in August 2018 for the period 01/01/2005 to 31/12/2014.
  • The dataset has 461 births.
  • The opt-outs were:
    • 739 women from the 1973-78 cohort, and
    • 38 women from the 1989-95 cohort.

South Australia

  • The South Australian Perinatal Statistics Collection, both Public and Private Hospital, data were linked in 2018. The birth dates range from March 1986 to December 2016.
  • The dataset has 2306 records: 82 from the 1946-51 cohort, 1974 from the 1973-78 cohort, and 250 from the 1989-95 cohort.
  • The opt-outs were:
    • 738 women from the 1973-78 cohort, and
    • 37 women from the 1989-95 cohort.

Northern Territory