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Table 3 Trinucleotide repeat polymorphism allele frequency, comparing cases and controls within each of the three populations tested

From: Association study of the trinucleotide repeat polymorphism within SMARCA2 and schizophrenia

Allele French-Canadian Tunisian Caucasian of European origin
  Case (n = 100) Control (n = 102) Case (n = 67) Control (n = 46) Case (n = 122) Control (n = 125)
-1 0.11 0.15 0.1 0.11 0.08 0.1
0 0.87 0.85 0.86 0.84 0.91 0.88
+1 0.03 0.01 0.04 0.05 0.01 0.02
  χ2 = 3.9, df = 2, p > 0.1 χ2 = 0.2, df = 2, p > 0.5 χ2 = 1.29, df = 2, p > 0.5