Table 1.

HBM questionnaire with four domains (susceptibility, severity, barriers, and benefits) to detect the reasons for colonoscopy refusal.

Items	Questions
Perceived susceptibility	(a)“Is colon cancer risk greater for patients with a positive FOBT who didn’t undergo a colonoscopy?”
	(b)“Is colon cancer greater in 50–69-year-old patients?”
Perceived severity	(a)“Does non-adherence to colonoscopy lead to worsening of quality of life?”
	(b)“Do you think the lack of adherence to colonoscopy in patients with a positive FOBT can lead to death?”
Perceived barrier	(a)“Does a healthcare unit have a schedule available to suit your daily tasks?”
	(b)“Is a healthcare unit easy to access from your house?”
Perceived benefit	(a)“Is a colonoscopy a more effective preventive treatment for patients with a positive FOBT?”
	(b)“Do the benefits of undergoing a colonoscopy outweigh the inconveniences?”