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Table 2 Distribution of CYP1A1 alleles in cases and controls.

From: CYP1A1gene polymorphisms increase lung cancer risk in a high-incidence region of Spain: a case control study

Allele Controls, N (%) Cases, N (%) OR (CI) pvalue
CYP1A1*1 452 (85.3) 168 (81.6) 1.0 (Ref.)  
CYP1A1*2A 45 (8.5) 11 (5.3) 0.62 (0.3-1.2) 0.20
CYP1A1*2B 7 (1.3) 12 (5.8) 4.59 (1.4-12.6) < 0.01
CYP1A1*2C 1 (0.2) 1 (0.5) Nc  
CYP1A1*3 2 (0.4) 2 (1) Nc  
CYP1A1*4 23 (4.3) 12 (5.8) 1.32 (0.7-2.9) 0.29
  1. N: Number of alleles
  2. OR (CI): Odds ratio with 95% confidence interval
  3. nc: Non-calculable