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Table 1 Frequency distributions of selected variables in HCC cases and controls

From: A miR-182 variant and risk of hepatocellular carcinoma in a southern Chinese population

Variables Cases n(%) Controls n(%) P a
All subjects 863(100) 908(100)  
Age    0.687
 ≤ 49 467(54.1) 500(55.1)  
 > 49 396(45.9) 408(44.9)  
Sex    0.053
 Females 100(11.6) 80(8.8)  
 Males 763(88.4) 828(91.2)  
Smoking    < 0.001
 Never 492(57.0) 679(74.8)  
 Ever 371(43.0) 229(25.2)  
Drinking    < 0.001
 Never 531(61.5) 711(78.3)  
 Ever 332(38.5) 197(21.7)  
HBV infection    < 0.001
 (−) 138(16.0) 821(90.4)  
 (+) 725(84.0) 87(9.6)  
  1. a Two sides chi-square test