Table 3.

Dimensional symptom scales of ADHD and disruptive behavior related to 5-HTT LPR genotype in boys

	5-HTT genotype in boys
Dimensional symptom scale	SS short/short n = 12 Mean(S.D.)	LS long/short n = 47 Mean(S.D.)	LL long/long n = 45 Mean(S.D.)	p†	p‡
ADHD inattentive	4.17(3.10)	6.08(4.25)	4.09(3.73)	0.867	0.122
ADHD hyperactive	3.17(3.43)	4.71(4.00)	3.02(2.97)	0.990	0.089
ADHD combined	7.33(6.05)	10.79(7.04)	7.11(6.43)	0.928	0.064
ODD	1.00(1.48)	2.17(2.82)	1.24(2.05)	0.817	0.079
CD	1.08(1.68)	1.49(2.47)	0.42(1.08)	0.328	0.006
ODD or CD	2.08(2.64)	3.66(4.90)	1.67(2.86)	0.651	0.018

*Total number with the specific genetic marker

^†SS and LL compared

^‡LS and LL compared