Definitions:​

Vic PDC: Whether or not the mother has received a pertussis containing vaccine during this pregnancy.
NPDC, WA PDC: The trimester of this pregnancy in which this woman received vaccination against pertussis (Vaccinated during first trimester; Vaccinated during second trimester; Vaccinated during third trimester; Vaccinated in unknown trimester; Not vaccinated; Unknown if vaccinated).
Qld PDC: An indicator Yes/No for whether a vaccination for pertussis was redeived during this pregnancy. If yes, at what gestation was this vaccination received (completed weeks) (included in additional text).