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Factors influencing colonoscopy behaviour among Koreans with a positive faecal occult blood tests

OBJECTIVE
Colonoscopy is important for colorectal cancer (CRC) screening in individuals with a positive faecal occult blood test (FOBT). The purpose of the present study was to identify factors affecting the colonoscopy screening behaviour of FOBT-positive individuals, based on the health belief model (HBM).


METHODS
This study involved a cross-sectional survey of 213 individuals aged 50 years or older who underwent CRC screening at a general hospital in Seoul, Korea, as part of the Korean National Cancer Screening Programme and who tested positive on FOBT. The questionnaire was created based on HBM instruments. The collected data were analysed using descriptive statistics, and factors associated with adherence to colonoscopy were examined using logistic regression analysis.


RESULTS
Of the FOBT-positive individuals, 44.1% adhered to colonoscopy. Three of the six evaluated HBM-driven factors (perceived seriousness, perceived barriers and health motivation) significantly differed between colonoscopy-adherent and non-adherent subjects. Perceived seriousness and perceived barriers were the most important factors influencing colonoscopy screening behaviour.


CONCLUSION
For early detection and prevention of CRC, colonoscopy screening behaviour should improve among FOBT-positive individuals. To this aim, education on the graveness of CRC should be provided, and barriers to CRC screening should be addressed.