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Table 3 HHRR and TDT Analysis for the CBS T833C/844ins68 polymorphism in nuclear families with MR probands.

From: Cystathionine β-synthase T833C/844INS68 polymorphism: a family-based study on mentally retarded children

  Allele Transmitted Non-transmitted χ2 P value Relative risk (RR)
HHRR analysis 1 259 264 1.714 0.1905 1.346
  2 10 5    
TDT analysis 1 3 6 1.00 0.3173  
  2 6 3