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Table 1 Distributions of gender and age among controls and cases with colorectal carcinomas and adenomas.

From: Effects of polymorphisms in ERCC1, ASE-1 and RAIon the risk of colorectal carcinomas and adenomas: a case control study

  Controls Carcinomas Adenomas, all High-risk adenomas Low-risk adenomas
  No (%) No (%) No (%) No (%) No (%)
No. of subjects 399 156 981 227 754
Sex a      
   Male 157 (39.3) 86 (55.1) 601 (61.3) 150 (66.1) 451 (59.8)
   Female 242 (60.7) 70 (44.9) 380 (38.7) 77 (33.9) 303 (40.2)
Age b      
   Mean (SD) 54.2 (3.3) 67.9 (11.2) 57.3 (3.7) 57.3 (3.5) 57.3 (3.8)
  1. a There are significant differences in the number of males and females in the control group and the case groups, p < 10-4 (test for comparison of two proportions).
  2. b There are significant differences in age among the control group and the case groups, p < 10-4 (Mann-Whitney test).