Answer the following questions to the best of your knowledge. The quiz assesses certain risk factors to determine whether colon cancer screening is appropriate for you at this time. Remember that certain colon cancer risk factors are within your control (see modifiable risk factors). Others, like your age and family history, are not within your control. Although modifiable and nonmodifiable risk factors both contribute to overall colon cancer risk, the factors that would lead to needing earlier or more frequent colon cancer screening are generally not modifiable.