Table 1 Description of study instrument
Construct | No. of Items (Format) | Scoring (Range) |
|---|---|---|
1) Knowledge; refers to a theoretical or practical understanding of a subject | 11 items (true-false-don’t know) | ‘Correct’ response = 2, ‘don’t know’ response = 1, ‘incorrect’ response = 0 (0–22) |
2) Perceived Susceptibility; refers to subjective assessment of risk of developing a health problem | 4 items/ 5-point Likert Scale (strongly disagree to strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (4–20) |
3) Perceived severity: Perceived severity refers to the subjective assessment of severity of a health problem and its potential consequences. | 6 items/5-point Likert Scale (strongly disagree to strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (6–30) |
4) Perceived benefits: Health-related behaviors are also influenced by the perceived benefits of taking an action. | 7 items/5-point Likert Scale (strongly disagree to strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (7–35) |
5) Perceived barriers: Health-related behaviors are also a function of perceived barriers to taking action. | 9 items/5 point Likert Scale (strongly disagree- strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (9–45) |
6) Perceived Self-efficacy: refers to an individual’s perception of his or her competence to successfully perform a behavior | 5 items/5 point Likert Scale (strongly disagree- strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (5–25) |
7) Behavioral intention; refers to a person’s perceived probability or “subjective probability” that he or she will engage in a given behavior. | 5 items/5-point Likert Scale (strongly disagree to strongly agree) | strongly disagree = 1, disagree = 2, no idea = 3, agree = 4, strongly agree = 5 (5–25) |
8) Behavior; refers preventative behaviors associated with colorectal cancer. | 5 items/5-point Likert Scale (Always to never) | always = 5, often = 4, sometimes = 3, rarely = 2, never = 1 |