Mild Dermatoglyphic Deviations in Adolescents with Autism Spectrum Disorders and Average Intellectual Abilities as Compared to Typically Developing Boys

Table 2

Palmar flexion creases (PFCs) as a percentage of all palms for boys with ASD and typically developing boys.

Hand	Pattern	ASD boys	Control boys		value
Left	Normal	100% (46)	97.9% (47)	0.97	0.33
	Simian	0% (0)	2.1% (1)
	Sydney	0% (0)	0% (0)
Right	Normal	97.8% (45)	93.8% (45)	1.96	0.38
	Simian	0% (0)	4.2% (2)
	Sydney	2.2% (1)	2.1% (1)
Discordance between LH and RH		2.2% (1)	4% (2)	0.30	0.58

ASD = Autism Spectrum Disorders; LH = left hand; RH = right hand.
Exact counts of palms are in parentheses. Chi-square tests the hypothesis that there is no association between PFC patterns and group membership.