Effect of a Theory-Based Narrative Video on Colorectal Cancer Screening Intention, Knowledge, and Psychosocial Variables Among a Predominantly Hispanic Population.

Abstract

Colorectal cancer (CRC) remains the third leading cause of cancer death in the USA. Latinx adults are overrepresented in late-stage CRC diagnosis as CRC screening utilization remains low among Latinx-identifying individuals. This study aims to evaluate the effect of a theory-based narrative video following a culturally appropriate storyline on CRC screening intention, knowledge, and psychosocial variables along the U.S.-Mexico border. We designed and analyzed a non-randomized pre-posttest evaluation of a narrative, culturally tailored video embedded within a community program. The study is set in the U.S.-Mexico border community. Outreach provided a link or QR code to access the survey. In all, 458 participants started the survey, and 304 completed the survey. Participants were recruited through flyers distributed throughout various community events by the program's community health workers and via social media. The intervention evaluated changes in participant's knowledge, perceived barriers, perceived susceptibility, self-efficacy, and perceived benefits and intention to screen. Participants were a mean age of 39 and identified mainly as female (72.7%) and Hispanic/Latinx (88.49%). After viewing the narrative video, participants had significantly improved perceived susceptibility, self-efficacy, and benefits, while perceived barriers and sense of fatalism significantly decreased. Paradoxically, this was associated with a significant decrease in knowledge scores. Results from this intervention suggest that a theory-based narrative video following a culturally appropriate storyline effectively improves psychosocial variables and intention to carry out CRC screening in a predominantly Hispanic border population.