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Table 2 STin2 VNTR polymorphism in patients with tobacco use disorder (TUD) versus never-smokers

From: SLC6A4STin2 VNTR genetic polymorphism is associated with tobacco use disorder, but not with successful smoking cessation or smoking characteristics: a case control study

STin2 VNTR Never-smokers n = 175 TUD n = 185 OR 95% CI χ 2 p
   Yes No Yes No     
Genotypes STin2 - 12/12 72 103 82 103 0.88 0.58-1.33 0.54 0.372
STin2 - 12/10 50 125 71 114 1.56 1.00-2.42 3.88 0.049
STin2 - 12/9 3 172 6 179 0.63 0.15-2.67 0.72 0.353
STin2 - 10/10 49 126 26 159 0.42 0.25-0.71 10.60 < 0.001
STin2 - 10/9 0 175 0 185 - - - -
STin2 - 9/9 1 174 0 185 - - - -
Allelic Variants STin2.12 125 50 159 26 2.45 1.44-4.15 11.38 < 0.001
STin2.10 99 76 97 88 0.85 0.56-1.28 0.621 0.431
  STin2.9* 4 171 6 179 1.43 0.40-5.17 - 0.751
  1. OR: odds ratio with 95% CI: confidence interval). All results of χ2 tests (df = 1), except * result of Fisher exact probability test.