Table 2: Smoking and health status at the time of birth of mothers who were recorded as Aboriginal in the birth data (Population 1) and from an enhanced reporting of Aboriginality algorithm (ERA2 – 4) who gave birth to at least one singleton baby in NSW between 2010 and 2014.

^Chronic conditions encompasses renal, cardiac, thyroid, asthma, psychiatric, and other autoimmune conditions[22].

	Population 1	ERA 2	ERA 3	ERA 4
	N=16,306	N=869	N=1,848	N=7,801
	%
Smoked during pregnancy	49.7	41.2	43.8	32.5
Chronic conditions^	1.8	1.2	2.5	1.7
Any hypertension	9.4	8.8	8.6	9.2
Any diabetes	7.9	5.6	6.4	7.2