Table 1. Characteristics of Subjects.

(a) All Subjects
	Mean (SD)
	Cases (n = 631)	Controls (n = 6310)
Age of onset (years) 1	29.8 (5.5)	-
Maximum age (years) 2	34.5 (4.8)	35.0 (4.4)
	% [n]
Sex
Male	63.6 [401]	63.6 [4010]
Female	36.4 [230]	36.4 [2300]
Indigenous status
Non-Indigenous	67.2 [424]	91.7 [5784]
Indigenous	32.8 [207]	8.3 [526]
(b) Subjects with birth and socioeconomic data available
	Cases (n = 68)	Controls (n = 738)
	Mean (SD)
Age of onset (years) 2	23.0 (2.7)	-
Proportion of Optimal Birth Weight (%) 3	98.2 (15.7)	97.5 (12.6)
Maximum age (years) 2	25.6 (2.8)	26.2 (2.7)
	% [n]
Sex
Male	57.4 [39]	59.9 [442]
Female	42.6 [29]	40.1 [296]
Indigenous status
Non-indigenous	64.7 [44]	93.6 [691]
Indigenous	35.3 [24]	6.4 [47]
Social disadvantage 4
1 (low)	5.3 [3]	8.0 [49]
2	12.3 [7]	14.7 [90]
3	29.8 [17]	24.5 [150]
4	19.3 [11]	23.5 [144]
5	15.8 [9]	17.5 [107]
6 (high)	17.5 [10]	11.8 [72]

¹ Age of onset derived from the difference, in years, between data of first CVD event and date of birth

² Maximum age is the age reached by the end of the study period, December 2009

³ POBW data was only available for a subset of the data, births after 1980

⁴ Social disadvantage was based on sextiles of the 1996 Australia Bureau of Statistics Index of Education and Occupation