Reference 
Allele Change 
Risk Allele 
Statistical Values 
Author Comments 
Result of Statistical Analysis 
Gill M, 1997 

480 bp 
HRR P=0.014 (df=1) for allele 480 bp
HRR P=0.014 (df=1) for allele 480 bp

HRR analysis revealed a significant association between ADHD......
HRR analysis revealed a significant association between ADHD and the 480bp DAT1 allele. The 480bp allele was preferentially transmitted to ADHD probands.
More...

Significant

Li D, 2006 
440, 480, 520bp allele 

allele 440bp: overall P(Z) Pvalue=0.6418, heterogeneity P(......
allele 440bp: overall P(Z) Pvalue=0.6418, heterogeneity P(Q) Pvalue=0.7829, publication bias P(T) Pvalue=0.309, overall OR=1.02; Heterogeneity test between design types, P(Q) Pvalue=0.4536, Heterogeneity test between sample ethnicities, P(Q) Pvalue=0.0749; allele 480bp: overall P(Z) Pvalue=0.1955, heterogeneity P(Q) Pvalue=1E6, publication bias P(T) Pvalue=0.065, overall OR=1.04; Heterogeneity test between design types, P(Q) Pvalue=0.1759, Heterogeneity test between sample ethnicities, P(Q) Pvalue=0.0792; allele 520bp: overall P(Z) Pvalue=0.05, heterogeneity P(Q) Pvalue=0.9236, publication bias P(T) Pvalue=0.729, overall OR=1.48; Heterogeneity test between design types, P(Q) Pvalue=0.2926, Heterogeneity test between sample ethnicities, P(Q) Pvalue=0.5349.
More...

allele 440bp showed no significant association; allele 480......
allele 440bp showed no significant association; allele 480bp showed no significant association; allele 520bp showed weak significant association.
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Nonsignificant

Smith KM, 2003 

10R 
Genotype groupings chisquare Pvalue=0.840, Allele grouping......
Genotype groupings chisquare Pvalue=0.840, Allele groupings chisquare Pvalue=0.740
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no significant differences were observed
no significant differences were observed

Nonsignificant

Waldman ID, 1998 
311 repeats 
10R 
Betweenfamily association ttest: onetailed P=0.032 for HI......
Betweenfamily association ttest: onetailed P=0.032 for HI symptoms, onetailed P=0.137 for IA symptoms; Withinfamily analyses using genetically discordant siblings: Wilcoxon signed ranks test onetailed P=0.008 for HI symptoms, onetailed P=0.011 for IA symptoms; Withinfamily TDT test by ADHD diagnosis,severity level, and genetic model: P=0.0349 for any diagnosis at medium level of symptom severity, P=0.0106 for any diagnosis at high level of severity, P=0.0374 for combined tyep at low level of severity, P=0.0163 for combined tyep at medium level of severity, P=0.0325 for combined tyep at high level of severity, P=0.0387 for combined tyep at medium level of severity under recessive model.
More...

Withinfamily analyses of LD confirmed the 480bp allele (10......
Withinfamily analyses of LD confirmed the 480bp allele (10repeat) as the highrisk allele. In betweenfamily association analyses, levels of HI symptoms but not IA symptoms were related to the number of DAT1 highrisk alleles. Siblings discordant for the number of DAT1 highrisk alleles differed markedly in their levels of both HI and IA symptoms. Withinfamily analyses of LD, using the TDT, suggested association and linkage of ADHD with DAT1 and that this relation was especially strong with the combined but not the inattentive subtype. The relation of DAT1 to ADHD increased monotonically, from low to medium to high levels of symptom severity.
More...

Significant

Chen CK, 2003 

10R 
TDT Pvalue=0.001, X^{2}(1.df)=10.8, OR=2.9
TDT Pvalue=0.001, X^{2}(1.df)=10.8, OR=2.9

found evidence of increased transmission of the 10repeat al......
found evidence of increased transmission of the 10repeat allele
More...

Significant

Brown, A. B., 2011 
9R 

Pvalue=0.004, X^{2}=8.34
Pvalue=0.004, X^{2}=8.34

There was a statistically significant difference, indicating......
There was a statistically significant difference, indicating that the 9R allele was more frequent in the ADHD sample.
More...

Significant

Kustanovich V, 2004 


GRR=1.39, TDT Pvalue=0.484
GRR=1.39, TDT Pvalue=0.484

No evidence for an association was found
No evidence for an association was found

Nonsignificant

Brookes KJ, 2006(b) 


TDT Pvalue=0.003 in English group; TDT Pvalue=0.001 in Tai......
TDT Pvalue=0.003 in English group; TDT Pvalue=0.001 in Taiwanese group
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provide global evidence of association and linkage
provide global evidence of association and linkage

Significant

Lim MH, 2006 


7R: TDT Pvalue=0.036, X^{2}=4.5; 9R: TDT Pvalue=0.......
7R: TDT Pvalue=0.036, X^{2}=4.5; 9R: TDT Pvalue=0.036, X^{2}=4.5; 10R: TDT Pvalue=0.0011, X^{2}=10.71, OR=7.88; 11R: TDT Pvalue=NS, X^{2}=1.8
More...

preferentially transmitted to ADHD children for 7R, 9R and 1......
preferentially transmitted to ADHD children for 7R, 9R and 10R; 11R was not preferentially transmitted to ADHD children
More...

Significant

Simsek M, 2006 


Pvalue>0.05
Pvalue>0.05

indicated absence of any strong association
indicated absence of any strong association

Nonsignificant

Cheuk DK, 2006(b) 
6, 9, 10, 11 repeat 
10repeat 
TDT test for 10repeat allele: Pvalue=0.99 for all ADHD sam......
TDT test for 10repeat allele: Pvalue=0.99 for all ADHD sample, Pvalue=0.92 for combined subtype; CaseControl test for 10repeat allele: OR=0.89, 95%CI = 0.352.28, Pvalue=0.81.
More...

showed no significant association
showed no significant association

Nonsignificant

Bidwell LC, 2011 
9/10 repeat 
10repeat 
FBATGEE: total ADHD, Pvalue=0.03 (negative association) fo......
FBATGEE: total ADHD, Pvalue=0.03 (negative association) for 9repeat allele, Pvalue=0.02 (positive association) for 10repeat allele; Inattentive, Pvalue=0.009 (negative association) for 9repeat allele, Pvalue=0.005 (positive association) for 10repeat allele; Hyperactive/impulsive, Pvalue=0.57 for 9repeat allele, Pvalue=0.47 for 10repeat allele
More...

the 10repeat allele significantly associated with common AD......
the 10repeat allele significantly associated with common ADHD phenotype and the inattentive symptoms.
More...

Significant

Das M, 2011 


ETDT Pvalue=1, X^{2}(1df)=0, RR=1; allelic frequenc......
ETDT Pvalue=1, X^{2}(1df)=0, RR=1; allelic frequencies COCAPHASE Pvalue=0.99, X^{2}=0.0001 for 11R; ETDT Pvalue=0.08, X^{2}(1df)=3.1, RR=0.84; allelic frequencies COCAPHASE Pvalue=0.34, X^{2}=0.92 for 10R; ETDT Pvalue=0.14, X^{2}(1df)=2.19, RR=1.35; allelic frequencies COCAPHASE Pvalue=0.61, X^{2}=0.26 for 9R; ETDT Pvalue=1, X^{2}(1df)=0, RR=0.85; allelic frequencies COCAPHASE Pvalue=0.83, X^{2}=0.04 for 8R; ETDT Pvalue=0.25, X^{2}(1df)=1.33, RR=2.25; allelic frequencies COCAPHASE Pvalue=0.02, X^{2}=5.6 for 7R
More...

the data was statistically not significant in either caseco......
the data was statistically not significant in either casecontrol or familybased analysis for 8R, 9R, 10R and 11R; no significant contribution was noticed by familybased analysis; casecontrol analysis revealed statistically significant difference for the 7R
More...

Significant

Holmes J, 2000 
5, 811 repeats 
10repeat 
Casecontrol analysis: overall Pvalue=0.82; TDT analysis: o......
Casecontrol analysis: overall Pvalue=0.82; TDT analysis: overall Pvalue=0.75
More...

no evidence of association with SLC6A3 using either TDT or c......
no evidence of association with SLC6A3 using either TDT or case control analysis
More...

Nonsignificant

Asherson P, 2007 


TDT Pvalue=0.0186 for 3'UTR VNTR; 10R: TDT Pvalue=0.010, O......
TDT Pvalue=0.0186 for 3'UTR VNTR; 10R: TDT Pvalue=0.010, OR=0.21; 9R: TDT Pvalue=0.005, OR=0.81
More...

global evidence for association with the 3'UTR VNTR; 9R and ......
global evidence for association with the 3'UTR VNTR; 9R and 10R were associated with risk for ADHD
More...

Significant

Bruggemann D, 2007 


no Pvalue
no Pvalue

no association was found when testing single markers
no association was found when testing single markers

Nonsignificant

Barr CL, 2001(a) 
200520bp 

allelic TDT twosided Pvalue=0.110, onesided Pvalue=0.055......
allelic TDT twosided Pvalue=0.110, onesided Pvalue=0.055, X^{2=2.56 for 480bp, allelic TDT twosided Pvalue=0.123, onesided Pvalue=0.064, X2=2.32 for 440bp }
More...

the TDT was not significant for any allele of the polymorphi......
the TDT was not significant for any allele of the polymorphism, but there was a trend for the biased transmission of the 480bp allele of the VNTR to the ADHD probands
More...

Nonsignificant

Yang B, 2007 


MetaAnalysis: TDT Pvalue=0.004, OR=1.17, 95%CI=1.051.30; ......
MetaAnalysis: TDT Pvalue=0.004, OR=1.17, 95%CI=1.051.30; HHRR Pvalue=0.07, OR=1.50, 95%CI=0.972.33; CaseControl Pvalue=0.54, OR=0.95, 95%CI=0.801.12
More...

There were statistically significant evidences for heterogen......
There were statistically significant evidences for heterogeneity of the odds ratio in TDT and HHRR studies, but not in casecontrol studies.
More...

Significant

Das M, 2007 
9, 10repeat 

9repeat allele: HHRR Pvalue=0.009, OR=2.3; TDT Pvalue=0.0......
9repeat allele: HHRR Pvalue=0.009, OR=2.3; TDT Pvalue=0.002, RR=3.11; FBAT Pvalue=0.019. 10repeat allele: FBAT Pvalue=0.032.
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The observed transmission of the 9R allele deviated signific......
The observed transmission of the 9R allele deviated significantly from that of the expected transmission.
More...

Significant

Banoei MM, 2008 


chisquare Pvalue=0.9, X^{2}=0.081
chisquare Pvalue=0.9, X^{2}=0.081

no association between 10allele and ADHD
no association between 10allele and ADHD

Nonsignificant

Qian Q, 2007 


Chisquare test: long and shortrepeat genotype analysis: P......
Chisquare test: long and shortrepeat genotype analysis: Pvalue=0.032 for ADHD, Pvalue=0.014 for ADHDC, Pvalue=0.007 for ADHD refined phenotype, Pvalue=0.029 for pure ADHD; long and shortrepeat allele analysis: Pvalue=0.037 for ADHD, Pvalue=0.017 for ADHDC, Pvalue=0.009 for ADHD refined phenotype, Pvalue=0.032 for pure ADHD
More...

The longrepeat genotypes and alleles were seen more frequen......
The longrepeat genotypes and alleles were seen more frequently in ADHD probands than in controls. For ADHD subtypes, similar results were found.
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Significant

MartinezLevy, G. A.,2013 


HWE:F =0.04; Pvalue=0.52
HWE:F =0.04; Pvalue=0.52

No significant association was found for SLC6A_3`UTR_VNTR
No significant association was found for SLC6A_3`UTR_VNTR

Nonsignificant

Genro JP, 2007 


Allelic test Pvalue=0.78 in the total sample, Pvalue=0.78 ......
Allelic test Pvalue=0.78 in the total sample, Pvalue=0.78 in combined type sample; TDT analysis Pvalue=0.63 in the total sample, Pvalue=0.42 in combined type sample
More...

Either on the total sample or on the combined one, no allele......
Either on the total sample or on the combined one, no allele was significantly more transmitted than expected for the 3'VNTR polymorphism in the families with ADHD children.
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Nonsignificant

Qian Q, 2004 
short(67R)/long(912R) 

casecontrol genotype X^{2} test: Pvalue=0.032 (OR=......
casecontrol genotype X^{2} test: Pvalue=0.032 (OR=2.068, 95%CI=1.0504.070) for ADHD, Pvalue=0.014 (OR=2.529, 95%CI=1.1785.431) for ADHDC, Pvalue=0.029 (OR=2.488, 95% CI=1.0745.764) for pureADHD; casecontrol allele X^{2} test: Pvalue=0.037 (OR=2.006, 96%CI=1.0323.901) for ADHD, Pvalue=0.017 (OR=2.423, 95%CI=1.1485.112) for ADHDC, Pvalue=0.032 (OR=2.386, 95%CI=1.0525.414) for pureADHD; HHRR Pvalue=0.411; ETDT Pvalue>0.05
More...

longrepeat genotypes and alleles were seen more frequently ......
longrepeat genotypes and alleles were seen more frequently in ADHD probands than in controls; no overall evidence of association between SLC6A31 and ADHD according to HHRR analysis; no preferential transmission of any allele were found by ETDT test.
More...

Significant

Curran S, 2001 

480bp allele 
TDT Pvalue=0.013, X^{2}=6.119, OR=1.95 in the UK sa......
TDT Pvalue=0.013, X^{2}=6.119, OR=1.95 in the UK sample; TDT Pvalue=0.335, X^{2}=0.931, OR=0.81 in the Turkish sample; TDT Pvalue=0.063, X^{2}=3.47, OR=1.16 in the combined analysis
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when considered alone, data from the UK sample but not the T......
when considered alone, data from the UK sample but not the Turkish sample supported association and linkage between the SLC6A3 locus and ADHD, and in the combined analysis, they find only a marginal change in overall significance
More...

Significant

ElTarras, A. E., 2012 


allelic Pvalue<0.01, OR=2.5, CI=1.44.6 for 7R; Pvalue<0.0......
allelic Pvalue<0.01, OR=2.5, CI=1.44.6 for 7R; Pvalue<0.01, OR=0.4, CI=0.20.6 for 9R; Pvalue<0.01, OR=0.4, CI=0.30.5 for 10R; Pvalue<0.01, OR=3.3, CI=2.34.8 for 11R; genotypic Pvalue<0.01, OR=0.3, CI=0.10.6 for 10/10; Pvalue<0.01, OR=0.3, CI=0.20.5 for 10/9; Pvalue<0.01, OR=4, CI=2.17.9 for 11/11; Pvalue=0.01, OR=3, CI=1.47 for 11/7; Pvalue=0.4, OR=1.4, CI=0.72.8 for 11/10; Pvalue=0.08, OR=2.1, CI=0.95.1 for 10/7
More...

Among DAT1 allele and genotypes there were statistically str......
Among DAT1 allele and genotypes there were statistically strong association between 7 and 11 repeats and ADHD (OR: 2.5 and 3.3) respectively. While, repeats 9 and 10 seems to have protective effects. 11/11 and 11/7 genotypes, revealed strong significant associated with ADHD (OR = 4 and 3) respectively.
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Significant

Spencer, T. J., 2012 

9R 
Pvalue=NS, X^{2}=0.53
Pvalue=NS, X^{2}=0.53

the gene frequencies of each of the gene polymorphisms asses......
the gene frequencies of each of the gene polymorphisms assessed did not differ between the ADHD and control groups.
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Nonsignificant

Roman T, 2001 

10R 
allelic HRR Pvalue=0.88, X^{2}=0.02 in the total sa......
allelic HRR Pvalue=0.88, X^{2}=0.02 in the total sample, allelic HRR Pvalue=0.87, X^{2}=0.02 in the combined type for 10R; allele frequencies chisquare between probands and controls =1.90, Pvalue=0.86, chisquare between parents and controls=6.52, Pvalue=0.39; Pvalue=0.41, X^{2}=0.68 for other allele
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no preferential transmission for either the 10repeat allele......
no preferential transmission for either the 10repeat allele or other alleles was observed
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Nonsignificant

Franke B, 2008 


Pearson chisquare Pvalue=0.085, OR=1 for 10/10 genotype fr......
Pearson chisquare Pvalue=0.085, OR=1 for 10/10 genotype frequency, OR=1.27 for 10/9 genotype frequency, OR=1.98 for 9/9 genotype frequency
More...

genotype analysis did not show significant differences betwe......
genotype analysis did not show significant differences between cases and controls
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Nonsignificant

Genro JP, 2008 
9/10 repeats 

9 repeat Pvalue=0.867 for total sample, Pvalue=0.458 for c......
9 repeat Pvalue=0.867 for total sample, Pvalue=0.458 for combined sample; 10 repeat Pvalue=0.873 for total sample; Pvalue=0.365 for combined sample
More...

no allele was significantly more transmitted than expected
no allele was significantly more transmitted than expected

Nonsignificant

Wang Y, 2007 


HHRR Pvalue=0.177, X^{2}=1.82; TDT Pvalue>0.05, X<......
HHRR Pvalue=0.177, X^{2}=1.82; TDT Pvalue>0.05, X^{2}=1.8
More...

not significantly associated with ADHD
not significantly associated with ADHD

Nonsignificant

Niederhofer H, 2008 

6R 
HRR Pvalue=0.00, OR=1.0, X^{2}=0.00; allelic TDT X<......
HRR Pvalue=0.00, OR=1.0, X^{2}=0.00; allelic TDT X^{2}=0.00, OR=1.0 in 36 trios. HRR OR=0.91, X^{2}=0.04; allelic X^{2}=0.17, OR=0.88 in 36 trios and 13 duos
More...

none of the alleles was significantly associated with ADHD n......
none of the alleles was significantly associated with ADHD neither by HRR nor TDT; a nonsignificant result was obtained by both HRR and TDT for the risk allele (6R)
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Nonsignificant

Bakker SC, 2005 

10R 
allelic TDT Pvalue=0.73
allelic TDT Pvalue=0.73

no signs of a distorted transmissions of any of the single p......
no signs of a distorted transmissions of any of the single polymorphisms, or of single alleles
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Nonsignificant

Todd RD, 2001(a) 


ETDT Pvalue=1.00, X^{2}(3df)=0.06 in DSMIV inatten......
ETDT Pvalue=1.00, X^{2}(3df)=0.06 in DSMIV inattentive, ETDT Pvalue=0.23, X^{2}(2df)=3.0 in DSMIV combined, ETDT Pvalue=0.76, X^{2}(1df)=0.09 in DSMIV hyperactive, ETDT Pvalue=0.71, X^{2}(3df)=1.4 in DSMIV any ADHD; allelewise Pvalue=0.28, corrected Pvalue=0.48, X^{2}=1.18 for 10 repeat, allelewise Pvalue=0.31, corrected Pvalue=0.52, X^{2}=1.034 for 9 repeat in DSMIV any ADHD; allelewise Pvalue=0.16, corrected Pvalue=0.29, X^{2}=1.976 for 10 repeat, allelewise Pvalue=0.21, corrected Pvalue=0.37, X^{2}=1.60 for 9 repeat in DSMIV combined; allelewise Pvalue=0.81, corrected Pvalue=0.97, X^{2}=0.056 for 10 repeat, allelewise Pvalue=0.81, corrected Pvalue=0.96, X^{2}=0.059 for 9 repeat in DSMIV inattentive; allelewise Pvalue=0.76, corrected Pvalue=0.94, X^{2}=0.091 for 10 repeat, allelewise Pvalue=0.76, corrected Pvalue=0.94, X^{2}=0.091 for 9 repeat in DSMIV hyperactive/impulsive
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there was no significant transmission distortion for the SLC......
there was no significant transmission distortion for the SLC6A3 3' VNTR for any definition of ADHD and there was no significant allelewise evidence for transmission distortion for any ADHD subtype for both the 10repeat and 9repeat alleles
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Nonsignificant

Simsek M, 2005 

10R 
observed genotype frequencies, Pvalue>0.05; risk allele (10......
observed genotype frequencies, Pvalue>0.05; risk allele (10R) distribution, Pvalue=0.06, X^{2}(df=1)=3.65
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lack of a significant difference between cases and controls
lack of a significant difference between cases and controls

Nonsignificant

OuelletMorin I, 2008 
9/10 allele 

QTDT Pvalue>0.05 in AP, AT, AO models at 6 and 7 years old
QTDT Pvalue>0.05 in AP, AT, AO models at 6 and 7 years old

no significant association
no significant association

Nonsignificant

Langley K, 2005 

10R 
TDT Pvalue=0.61, Zstatistic=0.27 for 9R; TDT Pvalue=0.55,......
TDT Pvalue=0.61, Zstatistic=0.27 for 9R; TDT Pvalue=0.55, Zstatistic=0.39 for 10R in the familybased analysis; Pvalue=0.912, X^{2}(1df)=0.12, OR=1.0 in the casecontrol analysis
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no significant evidence for association was detected in the ......
no significant evidence for association was detected in the familybased and casecontrol analysis
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Nonsignificant

Johansson S, 2008 


Overall Pvalue=0.48; allelic Pvalue=0.59, OR=0.94
Overall Pvalue=0.48; allelic Pvalue=0.59, OR=0.94

showed no association
showed no association

Nonsignificant

Ouakil DP, 2005 

10R 
Pvalue=0.21, X^{2}(1df)=1.6; heterogeneity Pvalue=......
Pvalue=0.21, X^{2}(1df)=1.6; heterogeneity Pvalue=0.0009, X^{2}(12df)=33.13
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the metaanalysis showed no significant association between ......
the metaanalysis showed no significant association between ADHD and the SLC6A3 gene, but an important betweensamples heterogeneity
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Nonsignificant

Nyman ES, 2007 


No available information.
No available information.

No evidence of association was seen.
No evidence of association was seen.

Nonsignificant

Langley K, 2009 


Casecontrol analysis: Pvalue=0.61 for baseline ADHD; Pval......
Casecontrol analysis: Pvalue=0.61 for baseline ADHD; Pvalue=0.54 for persistent ADHD.
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not associated with persistent ADHD or baseline ADHD
not associated with persistent ADHD or baseline ADHD

Nonsignificant

Wohl M, 2008 


TDT Pvalue=1.00, Mc Nemar X^{2}=0.00 (df=1)
TDT Pvalue=1.00, Mc Nemar X^{2}=0.00 (df=1)

showed a perfect lack of transmission bias
showed a perfect lack of transmission bias

Nonsignificant

Kim YS, 2005 

10R 
allelic TDT Pvalue=0.81; X^{2}=2 for 6R; X^{2
allelic TDT Pvalue=0.81; X2=2 for 6R; X2=0.14 for 7R; X2=0 for 9R; X2=0.03 for 10R; X2=0 for 11R
More...
} 
did not show preferential transmission of any allele
did not show preferential transmission of any allele

Nonsignificant

Kirley A, 2002 

480bp 
HHRR: Pvalue=0.0062 (RR=1.4, OR=1.88); TDT: Pvalue=0.042 (......
HHRR: Pvalue=0.0062 (RR=1.4, OR=1.88); TDT: Pvalue=0.042 (OR=1.63); TDT by presence of family history: Pvalue=0.494 (OR[95%CI]=1.87[0.477.35]); TDT of Paternal and Maternal transmissions: Pvalue=0.403 (OR[95%CI]=1.56[0.554.44])
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Significant preferential transmission
Significant preferential transmission

Significant

Shang CY, 2011 
9/10 repeats 

10repeat allele FBAT Pvalue=0.059, Z=1.886 for total sampl......
10repeat allele FBAT Pvalue=0.059, Z=1.886 for total sample; 10repeat allele FBAT Pvalue=0.423, Z=0.801 for combined subtype; 10repeat allele FBAT Pvalue=0.061, Z=1.877 for inattentive subtype
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displayed trends for association with ADHD; displayed a tren......
displayed trends for association with ADHD; displayed a trend for association in inattentive subtype
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Nonsignificant

Feng Y, 2005(a) 


allelic TDT Pvalue (2sided)=1, X^{2}=0 of 10R; TDT......
allelic TDT Pvalue (2sided)=1, X^{2}=0 of 10R; TDT Pvalue (2sided)=0.934, X^{2}=0.007 of 9R
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no significant association
no significant association

Nonsignificant

Ilott NE, 2010 


QTDT AT Pvalue=0.03, X^{2}=7, df=2, QTDT AW Pvalue......
QTDT AT Pvalue=0.03, X^{2}=7, df=2, QTDT AW Pvalue=0.08, X^{2}=5.09, df=2 at age 2; QTDT AT Pvalue=0.004, X^{2}=11.15, df=2, QTDT AW Pvalue=0.002, X^{2}=12.17, df=2 at age 3
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modest, nominally significant associations in the AT test at......
modest, nominally significant associations in the AT test at age 2, and in the AT and AW tests at age 3, and still significant after bonferroni correction in the AW test at age 3
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Significant

Maher BS, 2002 


Pvalue=0.06, pooled OR=1.27; test of homogeneity Pvalue=0.......
Pvalue=0.06, pooled OR=1.27; test of homogeneity Pvalue=0.37, Q=10.85, df=10
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no positive association was demostrated with ADHD in the met......
no positive association was demostrated with ADHD in the metaanalysis
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Nonsignificant

Hawi Z, 2005 


TDT Pvalue=0.048, X^{2}=4.4, OR=1.8 for paternel tr......
TDT Pvalue=0.048, X^{2}=4.4, OR=1.8 for paternel transmission; TDT Pvalue=0.41, X^{2}=0.9, OR=0.8 for maternal transmission
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nominal significant overtransmission of paternal alleles was......
nominal significant overtransmission of paternal alleles was seen, no significant association was observed for maternal transmission
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Significant

Carrasco X, 2006 


Fisher's exact test Pvalue=0.2673
Fisher's exact test Pvalue=0.2673

not significantly different from unaffected siblings
not significantly different from unaffected siblings

Nonsignificant

Kim JW, 2006 


7R: chisquare Pvalue>0.05; 9R: Pvalue=0.03, OR=4.43, X
7R: chisquare Pvalue>0.05; 9R: Pvalue=0.03, OR=4.43, X^{2}=11.55 in the ADHD probands; Pvalue=0.03, X^{2}=12.70 in parents of probands; 10R/11R: chisquare Pvalue>0.05
More...

showed no significant association between 7R, 10R and 11R an......
showed no significant association between 7R, 10R and 11R and ADHD; suggested the possibility of an association between 9R and ADHD
More...

Significant

Gizer IR, 2009 


Metaanalysis model: Random: OR=1.12, 95% CI=1.001.27, Pva......
Metaanalysis model: Random: OR=1.12, 95% CI=1.001.27, Pvalue=0.028; Qstatistic: Pvalue=0.000001, I^{2}=65
More...

significant but modest association
significant but modest association

Significant

Hawi Z, 2003 


Global X^{2}=0.02; HHRR Pvalue=0.56, X^{2}=......
Global X^{2}=0.02; HHRR Pvalue=0.56, X^{2}=0.34, RR=0.66 for allele1; HHRR Pvalue=0.0062, X^{2}=7.5, RR=1.4 for allele2
More...

significant association between allele 2 (480 bp) of the SLC......
significant association between allele 2 (480 bp) of the SLC6A3 VNTR polymorphism and ADHD was reported
More...

Significant

Todd RD, 2005 

440bp allele 
TRANSMIT Pvalue=0.09 for 440bp allele; TRANSMIT Pvalue=0.1......
TRANSMIT Pvalue=0.09 for 440bp allele; TRANSMIT Pvalue=0.1 for 480bp allele
More...

there was a trend for significant undertransmission of the ......
there was a trend for significant undertransmission of the 440 and 480 base pair allele for the DSMIV combined ADHD subtype in the total sample
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Nonsignificant

Aparecida da Silva M, 2011 
4, 711 repeat 

allelic chisquare test Pvalue=0.75 (5df); genotypic chisq......
allelic chisquare test Pvalue=0.75 (5df); genotypic chisquare test Pvalue=0.61 (9df)
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There is no association between adult ADHD and VNTR 3'UTR po......
There is no association between adult ADHD and VNTR 3'UTR polymorphism
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Nonsignificant

Franke B, 2010 


9/9 genotype Pvalue=0.005, OR=1.5, X^{2} (1df)=8.15......
9/9 genotype Pvalue=0.005, OR=1.5, X^{2} (1df)=8.15, metaanalysis Pvalue=0.03, OR=1.34; 10/10 genotype metaanalysis Pvalue=0.29, OR=0.93
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the 9/9 genotype of the 3'UTR VNTR showed association with ......
the 9/9 genotype of the 3'UTR VNTR showed association with the disorder in adults in the combined and metaanalysis
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Significant
