Figure 1 : Distribution and CRC risk of the environmental 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 1

The left axis scale indicates the OR for CRC according to the number of environmental risk factors. The category of tree factors was selected as reference (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 number of environmental risk factors.