. 2015 Mar 4;7(1):10. doi: 10.1186/s11689-015-9106-9

Table 1.

Subject characteristics for the conjunction task

Measure	TD ( n = 21)		ARND ( n = 22)		ADHD ( n = 19)		Significance ^a	*Post hoc* tests
Measure	Mean	Std dev	Mean	Std dev	Mean	Std dev	Significance ^a	*Post hoc* tests
Age (years)	12.60	1.29	12.20	1.64	11.93	1.33	F = 1.098, p = 0.340
Sex (% male)	76.2		63.6		89.5		χ ² = 3.713, p = 0.156
Household income ($)	70,842	15,302	49,733	21,118	65,287	27,879	F = 5.261, p = 0.008	TD > ARND, p = 0.007^b
Full-scale IQ	107.81	13.08	73.05	12.33	95.79	16.97	F = 32.527, p < 0.001	TD > ARND, p < 0.001^c
								ADHD > ARND, p < 0.001^c

^a p value cutoff = 0.05; ^bGames-Howell test; ^cTukey’s HSD test.