Turner Syndrome	Neurotypical	Idiopathic ADHD	Idiopathic ADHD	p value†	p value††	p value†††
Number of participants	49	37	51	241	--	--	--
Sex (n)	Female (49)	Female (37)	Female (16)	Female (66)	--	--	--
Parent Education
≤ 11years (%)	0	2.9	4.1	--	NS	NS	--
12–15 years (%)	63.3	64.7	57.1	--	NS	NS	--
≥16 (%)	35.7	32.4	38.8	--	NS	NS	--
GH	40, U=1	--	--		--	--	--
Estrogen	None	--	--
Stimulants	1, U=3	--	--
	Mean(SD)	Mean(SD)	Mean(SD)	Mean(SD)
Age	8.6(2.15)	9.2(2.27)	9.3(1.9)	8.9(1.60)¥	NS	NS	NS
FSIQ	96.3(10.11)	112.1(10.45)	104.4(13.5)	--	P<0.001	0.002	--
PIQ	95.1(10.73)	112.2(10.51)	--	--	P<0.001	--	--
VIQ	106.1(11.97)	110.6(15.01)	--	--	NS	--	--

Note: FSIQ, Full-scale intelligence quotient; PIQ, Performance intelligence quotient; VIQ, Verbal intelligence quotient; NS not significant.

^{^}NEPSY- NEuroPSYchological assessment,

^{^^}BASC-2- Behavior Assessment System for Children-Second Edition,

^†Neurotypical vs. Turner Syndrome,

^††Idiopathic ADHD (NEPSY) vs. Turner Syndrome,

^†††Idiopathic ADHD(BASC-2) vs. Turner Syndrome,

^¥Calculated mean and SD from Table 11.13 in the BASC-2 manual: representation of the sample by age.