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Table 2 Distribution of selected demographic variables and risk factors

From: Association of CYP2A6 gene deletion with cancers in Japanese elderly: an autopsy study

 

All subjects (n = 1373)

Cancer-free (n = 547)

Cancer-bearing (n = 826)

p-value*

Age at death, years†

80.1 ± 9.0

   

  ≥ 80、n (%)

729 (53)

300 (55)

429 (52)

 

  < 80

644 (47)

247 (45)

397 (48)

0.2946

Gender, n (%)

 Male

743 (54)

273 (50)

470 (57)

 

 Female

630 (46)

274 (50)

356 (43)

0.0128

Smoking, n (%)

 Non-smoker

633 (46)

256 (47)

377 (45)

 

 Smoker

655 (48)

245 (45)

410 (50)

0.2776

 Missing

85 (6)

46 (8)

39 (5)

 

Alcohol, n (%)

 Non-drinker

833 (61)

346 (63)

487 (59)

 

 Drinker

456 (33)

157 (29)

299 (36)

0.0143

 Missing

84 (6)

44 (8)

40 (5)

 

Cancer, n (%)

 0

  

547 (40)

 

 1

  

604 (44)

 

 2

  

178 (13)

 

  ≥ 3

  

44 (3)

 

Cancer sites, n (%)

 Gastric cancer

  

163 (12)

 

 colorectal cancer

  

130 (10)

 

 Lung cancer

  

128 (9)

 

 Blood cancer

  

127 (9)

 
  1. means ± SDs
  2. *p-value for Fisher’s exact probability test