Table 1.

Characteristics of the study population

Cases, n (%)Controls, n (%)
Total1,5781,966
TCF7L2
    CC777 (49.2)1,027 (52.2)
    CT677 (42.9)786 (40.0)
    TT124 (7.9)153 (7.8)
Age at selection (y)
    30-3924 (1.5)41 (2.1)
    40-49100 (6.3)127 (6.5)
    50-59292 (18.5)331 (16.8)
    60-69551 (34.9)678 (34.5)
    70-79611 (38.7)789 (40.1)
Center
    KPMCP762 (48.3)799 (40.6)
    Minnesota565 (35.8)798 (40.6)
    Utah251 (15.9)369 (18.8)
Sex
    Male884 (56.0)1,054 (53.6)
    Female694 (44.0)912 (46.4)
Race
    White, non-Hispanic1,443 (91.6)1,834 (93.4)
    Hispanic61 (3.9)75 (3.8)
    African-American71 (4.5)55 (2.8)
Recent aspirin/NSAID use
    Yes490 (33.3)808 (44.1)
    No982 (66.7)1,025 (55.9)
Disease stage
    Local571 (36.2)
    Regional798 (50.6)
    Distant135 (8.6)
    Unknown74 (4.7)
Tumor site
    Proximal718 (45.5)
    Distal731 (46.3)
    Unknown129 (8.2)
  • Abbreviation: KPMCP, Kaiser Permanente Medical Care Program.