Table 1

Selected characteristics of the study population in the Minnesota Cancer Prevention Research Unit Polyp Study

CharacteristicAdenomatous polyps (n = 523)Controls (n = 625)
Agea (years)58.0± 9.7 (31–74)52.9± 11.0 (30–74)
Sex
 Men62%38%
 Women38%62%
Race/ethnicity
 Caucasian98%97%
 Otherb2%3%
Thymidylate synthase genotypes
 TSER polymorphism
  3rpt/3rpt30%26%
  3rpt/2rpt49%52%
  2rpt/2rpt (decreased expression)21%21%
  2rpt/4rpt0.3%c
 3′UTR polymorphism
  6bp/6bp45%50%
  6bp/0bp44%40%
  0bp/0bp11%10%
  • a Mean ± SD (range).

  • b Not included in further analyses.

  • c Not Caucasian, not included in further analyses.