Table 1.

Demographics of study population

Colorectal cancerWithout colorectal cancerTotal
Gender
    Male393069
    Female354277
Race/ethnicity
    Caucasian5864122
    African American9413
    Hispanic6410
    Asian101
Age*
    Mean43.544.544
    Median41.54342
    Range23-8424-8423-84
MMR mutation
    MLH1262652
    MSH2484694
Mutation type
    Missense161632
    Truncating/deletion5856114
Ascertainment
    Proband53962
    Relative of proband216384
  • * The age of onset is the age at first diagnosis for colorectal cancer patients and the age at blood draw or last contact for unaffected mutation carriers.