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Table 4 Maternal and paternal country of birth by childhood autism in cases and controls

From: The risk of childhood autism among second-generation migrants in Finland: a case–control study

  Cases Controls OR (95% CI) p AdjustedaOR (95% CI) p
  n % n %     
Mothers         
Finnish 1 058 93.9 4 340 96.2 Ref.   Ref.  
Former Yugoslavia 6 0.5 8 0.2 3.0 (1.1-8.8) 0.04 3.2 (1.1-9.1) 0.03
Former Soviet Union 22 2.0 50 1.1 1.7 (1.05-2.9) 0.03 1.7 (1.05-2.9) 0.03
Somalia 6 0.5 34 0.8 0.7 (0.3-1.8) 0.49 0.8 (0.3-1.9) 0.60
Thailand 3 0.3 13 0.3 1.0 (0.3-3.6) 0.9885 1.0 (0.3-3.7) 0.95
Vietnam 5 0.8 9 0.1 7.0 (2.3-20.9) <0.001 7.0 (2.3-21.2) <0.001
Fathers         
Finnish 1 069 94.9 4 344 96.3 Ref.   Ref.  
Former Yugoslavia 8 0.7 8 0.2 4.0 (1.5-10.6) 0.006 4.1 (1.5-10.9) 0.005
Former Soviet Union 5 0.5 21 0.5 0.9 (0.4-2.5) 0.88 0.9 (0.4-2.5) 0.89
Somalia 8 0.7 31 0.7 1.1 (0.5-2.6) 0.78 1.2 (0.5-2.8) 0.62
Turkey 1 0.1 10 0.2 0.4 (0.1-3.3) 0.40 0.5 (0.1-3.5) 0.45
Vietnam 8 0.7 5 0.1 6.4 (2.1-19.7) 0.001 6.4 (2.1-19.5) 0.001
  1. aAdjusted for parental age. OR=odds ratio, CI=confidence interval. Countries with ten or more immigrant mothers or fathers were included.