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. 2014 Jun;47(3):280-91.
doi: 10.1007/s12160-013-9562-y.

Intention to undergo colonoscopy screening among relatives of colorectal cancer cases: a theory-based model

Watcharaporn Boonyasiriwat  1 , Man Hung, Shirley D Hon, Philip Tang, Lisa M Pappas, Randall W Burt, Marc D Schwartz, Antoinette M Stroup, Anita Y Kinney
Affiliations

Intention to undergo colonoscopy screening among relatives of colorectal cancer cases: a theory-based model

Watcharaporn Boonyasiriwat et al. Ann Behav Med. 2014 Jun.

Abstract

Background: It is recommended that persons having familial risk of colorectal cancer begin regular colonoscopy screening at an earlier age than those in the general population. However, many individuals at increased risk do not adhere to these screening recommendations.

Purpose: The goal of this study was to examine cognitive, affective, social, and behavioral motivators of colonoscopy intention among individuals at increased risk of familial colorectal cancer.

Methods: Relatives of colorectal cancer cases (N = 481) eligible for colonoscopy screening completed a survey assessing constructs from several theoretical frameworks including fear appeal theories.

Results: Structural equation modeling indicated that perceived colorectal cancer risk, past colonoscopy, fear of colorectal cancer, support from family and friends, and health-care provider recommendation were determinants of colonoscopy intention.

Conclusions: Future interventions to promote colonoscopy in this increased risk population should target the factors we identified as motivators. (ClinicalTrials.gov number NCT01274143).

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Conflict of interest statement

Conflict of Interest The authors have no conflict of interest to disclose.

Figures

Fig. 1
Fig. 1
Study flow diagram
Fig. 2
Fig. 2
Results of the SEM for intention to undergo colonoscopy. Coefficients are standardized path coefficients. The single-headed continuous lines indicate significant paths (p <0.05), and dashed lines indicate insignificant paths (p >0.05). Covariates of age, gender, household income, employment status, health insurance status, number of first-degree and second-degree relatives who had colorectal cancer, and educational level are not shown, but they were saturated into the entire model. The exogenous variables were correlated
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