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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Res Dev Disabil. 2014 Apr 26;35(7):1658–1665. doi: 10.1016/j.ridd.2014.04.007

Table 2.

Informants’ Severity Ratings of Attention-Deficit Hyperactivity Disorder Subdomain Symptoms

Inattention Hyperactivity Impulsivity

Genotypes M (SD) F p= ηp2 M (SD) F p= ηp2 M (SD) F p= ηp2
PARENTS’ RATINGS
DAT1 intron8 VNTRa 0.31 .577 .003 4.34 .045 .045 0.18 .674 .002
  5-6 repeat (n=36) 16.0 (6.2) 8.9 (4.3) 4.9 (2.9)
  6-6 repeat (n=59) 16.5 (5.8) 8.1 (4.5) 4.8 (3.1)
DAT1 3’ UTR VNTRa 2.15 .122 .044 0.16 .851 .003 0.14 .866 .003
  10-10 (n=50) 15.7 (5.8) 8.1 (4.2) 4.9 (3.2)
  9-10 (n=36) 17.5 (6.3) 8.6 (4.5) 4.9 (2.8)
  9-9 (n=11) 12.9 (6.9) 7.1 (5.2) 4.2 (3.8)
DAT1 rs27072a 2.67 .105 .027 0.90 .344 .009 0.43 .512 .004
  C-C (n=72) 15.5 (6.4) 8.2 (4.6) 4.7 (3.1)
  T-C (n=29) 17.5 (5.1) 9.0 (3.7) 5.1 (3.1)
DRD2 rs2283265a 0.00 .982 .000 0.22 .642 .002 0.06 .801 .001
  G-G (n=67) 16.5 (6.1) 8.5 (4.2) 5.0 (3.0)
  T-G (n=28) 16.0 (6.1) 7.9 (4.7) 4.7 (3.4)
TEACHERS’ RATINGS
DAT1 intron8 VNTR 0.10 .752 .001 2.26 .137 .026 0.35 .554 .004
  5-6 repeat (n=33) 16.3 (8.1) 8.3 (5.0) 4.1 (3.7)
  6-6 repeat (n=56) 15.8 (6.6) 6.6 (5.2) 4.6 (3.6)
DAT1 3’ UTR VNTR 5.30 .007 .105 0.95 .391 .021 0.37 .690 .008
  10-10 (n=46) 16.3 (7.1) 6.6 (4.8) 4.3 (3.8)
  9-10 (n=35) 16.3 (6.4) 7.3 (5.4) 4.6 (3.6)
  9-9 (n=12) 9.1 (9.1) 4.9 (5.2) 3.5 (3.1)
DAT1 rs27072 0.65 .423 .007 0.77 .782 .001 0.57 .454 .006
  C-C (n=66) 15.2 (7.9) 6.9 (5.4) 4.5 (3.8)
  T-C (n=30) 16.5 (6.0) 7.2 (4.7) 3.9 (3.2)
DRD2 rs2283265 6.53 .012 .069 0.61 .437 .007 3.30 .073 .037
  G-G (n=64) 16.8 (7.2) 6.9 (5.1) 4.5 (3.5)
  T-G (n=26) 12.4 (7.6) 6.0 (4.9) 3.0 (3.2)
a

Controlling for severity of autism spectrum disorder symptoms.