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Table 1 VDR-FokI polymorphism in study subjects

From: Vitamin D receptor initiation codon polymorphism influences genetic susceptibility to type 1 diabetes mellitus in the Japanese population

  T1DM patients Controls
  n = 110 n = 250
Genotype frequenciesa   
   FF 52(47%) 82 (33%)
   Ff 52(47%) 138(55%)
   ff 6 (6%) 30 (12%)
Allele frequenciesb   
   F 156 (71%) 302(60%)
   f 64 (29%) 198(40%)
Phenotype frequenciesc   
   F positive 104 (95%) 220(88%)
   f positive 58 (53%) 168(67%)
  1. Values shown are the number of subjects (percentage in parentheses). aΧ2 test of heterogeneity between T1DM patients and control subjects. Χ2 = 8.48, 2 degrees of freedom; P = 0.014. bΧ2 test of heterogeneity between T1DM patients and control subjects. Χ2 = 7.29, 1 degree of freedom; P = 0.0069. cRelative risk ratio for F phenotype = 2.4.