Gestational age is the duration of pregnancy in completed weeks. Pre-term births are those that occur before 37 completed weeks of gestation. At term births occur between 37–41 weeks, and post-term births occur at 42 or more weeks.
Of all Aboriginal and Torres Strait Islander babies born in 2020:
- 13% (2,383) were born pre-term.
- 87% (15,774) were born at term.
- Fewer than 0.4% (69) were born post-term (Figure MB 6).
Women who smoked tobacco during pregnancy were more likely to deliver pre-term babies than women who did not smoke. In 2019, 15% of Indigenous women who reported smoking during pregnancy delivered pre-term babies compared with 10% of Indigenous women who did not report smoking (Figure MB 7).