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Table 4 Influence of genetic polymorphisms on the risk of CRC in smoking or drinking people

From: Genetic polymorphisms in XRCC1 genes and colorectal cancer susceptibility

  Controls (%) n = 350 Cases (%) n = 320 P
Arg194Trp (smoking)
Trp/Trp 11(3.1) 15(4.7) 0.491
Arg/Trp + Arg/Arg 124(35.4) 127(39.7)  
Arg399Gln (smoking)
Arg/Arg 122(34.9) 137(42.8) 0.912
Arg/Gln + Gln/Gln 60(17.1) 69(21.6)  
Arg399Gln (drinking)
Arg/Arg 39(11.1) 46(14.4) 0.812
Arg/Gln + Gln/Gln 21(6.0) 27(8.4)