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Table 4 Overview of subjects' countries of origin

From: Association between the DTNBP1 gene and intelligence: a case-control study in young patients with schizophrenia and related disorders and unaffected siblings

  Subject
Country of origin Patients Siblings Controls
Netherlands (white Caucasian) 48 25 22
Turkey 3 1 0
Morocco 4 0 4
Surinam or Dutch Antilles 17 3 5
Missing 4 2 0
  1. Country of origin did not differ significantly between subject groups (Fisher's Exact = 9.44, p = 0.24).