Abstract A63: Changes in health beliefs among medically-underserved patients enrolled in a community-based randomized controlled trial to promote colorectal cancer screening
Authors: Christy Shannon M. , Sutton Steven K. , Chavarria Enmanuel , Davis Stacy N. , Abdulla Rania , Quinn Gwendolyn P. , Vadaparampil Susan T. , Ravindra Chitra , Schultz Ida , Roetzheim Richard , Shibata David , Meade Cathy D. , Gwede Clement K. 
Published: March 2017

Marked health disparities exist in colorectal cancer (CRC) screening, incidence, and mortality among medically-underserved communities. Literature suggests certain health beliefs (e.g., perceived risk) may be related to screening behavior. This study examined changes in CRC health beliefs following receipt of one of two educational interventions aimed at promoting CRC screening uptake among a medically-underserved population. We compared changes in CRC health beliefs at baseline and 12 months later both within and between the two intervention groups.

Enrolled participants were aged 50-75, at average CRC risk, not up-to-date with CRC screening guidelines, enrolled in a randomized controlled trial to increase CRC screening that was conducted at community clinics in the Tampa Bay area, and completed both the baseline and 12 month follow-up assessments. Participants were randomized to receive either a culturally-targeted photonovella and DVD plus fecal immunochemical test (FIT) intervention (titled Colorectal Cancer Awareness, Research, Education and Screening, or CARES, intervention group condition) or a Centers for Disease Control and Prevention (CDC) standard educational brochure plus FIT intervention (comparison group condition). At both time points, participants completed a questionnaire that included multiple health-related beliefs including Preventive Health Model (PHM) constructs (i.e., perceived susceptibility, perceived salience, self-efficacy, response efficacy, cancer worry, social influence, and religious beliefs), CRC awareness, decisional conflict regarding CRC screening, cancer fatalism, trust in the healthcare system, and perceived discrimination. Changes in health belief scores and group differences in change were examined using Student's t-tests.

The majority of participants (n=270) were: female (58%); white (67%) or black (26%); insured (59%) including county health insurance; had a household income &lt;$10,000 (65%); and had a high school education (35%) or more than high school education (41%). In both intervention conditions, there was an increase in CRC awareness, PHM social influence, and trust in the healthcare system (all p's&lt;.0001). In the CARES intervention group, there also was an increase in PHM salience (p&lt;.05). Among individuals in the comparison group, there was an increase in PHM response efficacy (p&lt;.01) and PHM self-efficacy (p&lt;.0001). There were no significant between-group differences on any of the health belief change scores.

Both CRC screening interventions promoted positive changes in multiple health beliefs from baseline to 12 months which suggests clear benefits of educational interventions. The interventions had common positive effects (i.e., CRC awareness, PHM social influence, and trust in the healthcare system), but also unique effects on PHM salience (CARES condition) and PHM self-efficacy and PHM response efficacy (comparison condition). However, between-group intervention comparisons were not significant suggesting that both educational interventions are beneficial. Given that individuals in both intervention groups were provided with access to CRC screening via FIT kit, future analyses will examine whether changes in health beliefs were associated with higher CRC screening uptake.

Citation Format: Shannon M. Christy, Steven K. Sutton, Enmanuel Chavarria, Stacy N. Davis, Rania Abdulla, Gwendolyn P. Quinn, Susan T. Vadaparampil, Chitra Ravindra, Ida Schultz, Richard Roetzheim, David Shibata, Cathy D. Meade, Clement K. Gwede. Changes in health beliefs among medically-underserved patients enrolled in a community-based randomized controlled trial to promote colorectal cancer screening. [abstract]. In: Proceedings of the Ninth AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2016 Sep 25-28; Fort Lauderdale, FL. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2017;26(2 Suppl):Abstract nr A63.