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Table 1 Distribution of selected characteristics in glioma cases and healthy controls

From: Association of leukocyte mitochondrial DNA content with glioma risk: evidence from a Chinese case–control study

Variables Case (n = 414) Control (n = 414) Pvalue
Age(years), No. (%)    0.491
<47 204 (49.27) 206 (49.86)  
≥47 210 (50.73) 208 (50.14)  
Sex, No. (%)    1.000
Male 241 (58.21) 241 (58.21)  
Female 173 (41.79) 173 (41.79)  
Smoking status, No. (%)    0.108
Never 318 (76.81) 329 (79.47)  
Ever 96 (23.19) 85 (20.53)  
Family history of cancer, No. (%)    0.103
Yes 45 (10.87) 32 (7.73)  
No 369 (89.13) 382 (92.27)  
Pack-years of smoking a , Mean (SD) 26.20 (14.94) 25.29 (13.05) 0.342
White blood cell count (10 9 /L), Mean (SD) 6.2 (4.17) 5.9 (3.32) 0.253
% of neutrophils, Mean (SD) 64.7 (25.32) 62.2 (23.85) 0.144
% of lymphocytes, Mean (SD) 28.1 (19.53) 30.3 (20.64) 0.116
% of monocytes, Mean (SD) 5.4 (3.88) 5.6 (3.35) 0.473
Platelet count (10 9 /L), Mean (SD) 245 (69.05) 253 (74.51) 0.110
WHO grade    
I/II 175 (42.27)   
III/IV 239 (57.73)   
  1. SD, standard deviation.
  2. aOnly for ever smokers.
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