Table 1.

ASD sample compared to TD sample on geographical region at time of participation

	ASD n = 230	TD n = 272
Country Region	% (N)	% (N)
Europe	60.4 (n = 139)	81.6 (n = 222)
North America	30.4 (n = 70)	14.3 (n = 39)
South America	0.9 (n = 2)	1.1 (n = 3)
Oceania	6.1 (n = 14)	0.7 (n = 2)
Africa	0.4 (n = 1)	0.0 (n = 0)
Asia	1.3 (n = 3)	0.7 (n = 2)
Other	0.4 (n = 1)	1.5 (n = 4)