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Table 2 Distribution of selected host characteristics by case–control status in Chinese

From: Genetic oxidative stress variants and glioma risk in a Chinese population: a hospital-based case–control study

Variables

Case (n = 384)

Control (n = 384)

P*

Age, y (mean ± SD)

62.4 ± 10.8

61.5 ± 12.1

0.277

Gender, no. (%)

   

Male

222 (57.8)

217 (56.5)

0.715

Female

162 (42.2)

167 (43.5)

 

Smoking status, no. (%)

   

Never

228 (59.4)

218 (56.8)

0.738

Former

70 (18.2)

72 (18.7)

 

Current

86 (22.4)

94 (24.5)

 

Pack-years (mean ± SD)

32.7 ± 25.1

30.3 ± 27.7

0.209

Tumor grade, no. (%)

   

I

41 (10.7)

0

 

II

176 (45.8)

0

 

III

86 (22.4)

0

 

IV

81 (21.1)

0

 
  1. *P values were derived from the χ 2 test for categorical variables (gender and smoking status) and t test for continuous variables (age and pack-years).
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BMC Cancer

ISSN: 1471-2407

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