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Table 4 Distribution of XRCC3 Thr241Met genotypes among cases and controls stratified by smoking status

From: XRCC3 Thr241Met gene polymorphisms and lung cancer risk: a meta-analysis

First author-year Ethnicity(country of origin) Smoking status Lung cancer cases Controls
C/C C/T T/T C/C C/T T/T
Wang-2003(36) USA (Mixed) Non-smoking 24 10#   93 67#  
   Smoking 45 33#   26 4#  
Zhang-2007 (47) China (Asian) Non-smoking 73 12#   126 16#  
   Smoking 110 16#   118 13#  
Rky-2006 (35) Sweden (Caucasian) Non-smoking 31 53#   32 42#  
   Smoking 48 43#   24 56#  
Osawa K-2010 Japan (Asian) Non-smoking 28 3#   42 12#  
   Smoking 63 9#   53 8#  
  1. #, the number of the combined C/T and T/T genotypes.