Figure 2 : Distribution and CRC risk of the genetic risk score in cases and controls.

From: Risk Model for Colorectal Cancer in Spanish Population Using Environmental and Genetic Factors: Results from the MCC-Spain study

Figure 2

The left axis scale indicates the OR for CRC according to the number of risk alleles. The group of 22 alleles was selected as reference category (OR = 1), because this is the average in the population. The right axis scale indicates the proportion of cases and controls shown in bars for each allele.