Exon 4 (Codon 72) Polymorphism Cases (n=100) Controls (n=100) OR(95%CI) Chi Square p valve
  Genotype (%) Pro Allele Frequency Genotype (%) Pro Allele Frequency      
Arg/Arg 22/100 (22.0) 0.47 41/100 (41.0) 0.32 1 11.55 0.003
Arg/Pro 61/100 (61.0)   53/100 (53.0)   2.2 (1.1-4.1) 5.6 0.01
Pro/Pro 17/100 (17.0)   6/100 (6.0)   5.3 (1.8-15.3) 10.3 0.001
Table 3: Over all frequency of p53 exon 4 (72 codon) polymorphism in NSCLC patients and controls.