Table 1.

CRC Risk Appraisal Measures

Type of risk assessment	Question(s) and response options
Perceived comparative risk	“What do you think is your chance of getting colorectal cancer in the next 10 years compared to the average person your age and sex?” Response options were “Very much below average”, Much below average”, “Below average”, “Average”, “Above average”, “Much above average”, and “Very much above average.”
Perceived absolute risk	“What do you think is your chance of getting colorectal cancer in the next 10 years?” Response options were, “No chance”, “Very unlikely”, “Unlikely”, “Moderate chance”, “Likely”, “Very Likely”, and “Certain to happen.” This was followed by the same question asking for a numerical estimate from 0% = No chance to 100% = Certain to happen.
Worry/feelings about getting CRC	“How worried are you about getting colorectal cancer in the next 10 years.” Response options were “Not at all worried”, “Slightly worried”, “Somewhat worried”, “Very worried”, and “Extremely worried.”
Feelings/beliefs about risk conditional on screening.	“If I don’t get screened for colorectal cancer, I would feel likely to get colorectal cancer in my lifetime” (Weinstein et al., 2007). Response anchors were from 1 = Strongly disagree to 7 = Strongly agree. They were further asked, “How much, if at all, would you lower your chance of getting colorectal cancer if you get screened within the next six months?” Response anchors were 1 = Not at all to 7 = Completely.

Note: All items were pooled to create a single risk appraisal score.