Table 5

Demographic details and outcomes for mothers and babies for BBA for those women who had multiple BBA events

Multiple BBA events
(n=219)
Non-BBA
(n=1 092 708)
P values
Maternal age*29.5 (5.39)30.4 (5.57)0.001
Smoker46.1%13.4%<0.001
Australian born85.8%70.4%<0.001
Hypertension0.5%6.2%<0.001
Diabetes3.2%5.1%<0.001
Private patient2.3%24.3%<0.001
Weeks gestation at birth*37.7 (3.36)38.9 (2.23)<0.001
Birth weight (g)*2991.7 (769.96)3460.4 (483.61)<0.001
Sex
 Male53.9%51.2%<0.001
 Female46.1%48.8%
Admitted to SCN/NICU28.8%11.4%<0.001
SPT0.0%2.0%<0.001
PMR (per 1000 births)22.82.2<0.001
PPH requiring transfusion (2006 onwards)0.0%0.7%
  • *Mean and SD.

  • †Unable to be calculated as no events in multiple BBA subgroup.

  • BBA, born before arrival; NICU, neonatal intensive care unit; PMR, perinatal mortality rate; PPH, postpartum haemorrhage; SCN, special care nursery; SPT, severe perineal trauma.