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Table 1 The frequencies of large normal alleles of ATXN3 gene

From: High frequency of Machado-Joseph disease identified in Southeastern Chinese kindreds with spinocerebellar ataxia

Number of CAG repeats Present study Japanese Indian Czech Combined Population
  Frequency Frequency χ2 P Frequency χ2 P Frequency χ2 P Frequency χ2 P
>27 0.28 0.21 3.683 0.055 0.12 42.045 0.000 0.09 27.663 0.000 0.17 8.616 0.003
>28 0.19 0.11 6.788 0.009 0.08 29.060 0.000 0.04 21.956 0.000 0.11 10.341 0.001
>29 0.13 0.07 5.869 0.015 0.04 28.517 0.000 0.04 11.836 0.001 0.08 5.264 0.002
>30 0.10 0.05 4.342 0.037 0.03 22.329 0.000 0.03 8.499 0.004 0.07 3.192 0.074
>31 0.07 0.05 1.332 0.248 0.02 14.120 0.000 0.01 8.186 0.004 0.05 2.190 0.139