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Table 4 Comparison of previous diseases between cases and controls.

From: Clinically diagnosed childhood asthma and follow-up of symptoms in a Swedish case control study

  Case (n = 158) Control (n = 171)  
  n % n % p-value
Has your child ever had asthma?
   Yes: 96 60.7 8 4.7 <0.0001
   No: 62 39.2 163 95.3  
Has your child ever had eczema?
   Yes: 74 46.8 67 39.2 0.16
   No: 84 53.2 104 60.8  
Has your child ever had hay fever?
   Yes: 34 21.5 24 14.0 0.075
   No: 124 78.5 147 85.9