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Table 2 Association of genetic ancestry with CRC status

From: Association of genetic ancestry with colorectal tumor location in Puerto Rican Latinos

Ancestry CRC
ORunadjusted ORadjustedb ORadjustedc
Categorical variablea
European ancestry
  ≤ (0.63) 1.0 1.0 1.0
  > (0.63) 0.95 (0.73–1.25) 0.92 (0.61–1.39) 0.98 (0.64–1.50)
African ancestry
  ≤ (0.18) 1.0 1.0 1.0
  > (0.18) 1.08 (0.82–1.41) 1.12 (0.74–1.68) 1.16 (0.76–1.76)
Amerindian ancestry
  ≤ (0.17) 1.0 1.0 1.0
  > (0.17) 1.19 (0.91–1.57) 1.03 (0.68–1.54) 0.99 (0.65–1.50)
Continuous variabled
 European ancestry 0.98 (0.87–1.11) 1.01 (0.84–1.22) 1.04 (0.86–1.26)
 African ancestry 1.01 (0.89–1.14) 1.01 (0.84–1.21) 1.01 (0.84–1.22)
 Amerindian ancestry 1.04 (0.63–1.22) 0.92 (0.77–1.11) 0.89 (0.74–1.08)
  1. aDichotomous variables were analyzed using the median value of each ancestry marker among controls as a cut-off
  2. bPOR’s adjusted by age at recruitment, gender, education, and family history of CRC
  3. cPOR’s adjusted by age at recruitment, gender, education, and family history of CRC, ever smoked, and current drinking
  4. dCategorical variables were categorized into quartiles and treated as continuous variables to measure the variation in risk per 25% increase of each ancestry marker