Oral presentation: Lequisha Suisse and Pheadra Regales

Background
The Dutch Caribbean faces a relatively high burden of colorectal cancer (CRC)-related mortality compared to the Netherlands. Population-based screening is essential for reducing CRC-related morbidity and mortality. In 2020, Curaçao introduced CRC screening for adults aged 50–75, yet participation remains low (~20%) due to, e.g., logistical barriers in reaching screening invitees, as well as misconceptions and limited knowledge of the procedure. In 2025, Aruba and Bonaire also implemented CRC screening, with St. Eustatius and Saba to follow in 2026 (BES-islands). However, similar barriers to informed decision‑making (IDM) persist, implying the need for tailored, culturally aligned information. Combining mobile health (mHealth) and personalized strategies may support IDM and strengthen coverage across the region.

Objective
To co-create culturally appropriate mHealth and personalized strategies that support IDM and coverage in CRC screening and follow-up colonoscopy in the Dutch Caribbean.

Methods 
We will conduct a needs assessment through interviews with target populations and stakeholders in Curaçao, Aruba, and BES-islands. Co‑creation sessions and usability tests will follow in Curaçao and Aruba. Next, implementation conditions and user experience will be assessed through interviews and questionnaires. Finally, we will evaluate effectiveness on reach and IDM using a pretest–posttest design.

Impact 
This four‑year project aims to establish and implement co-created mHealth and personalized strategies to improve IDM and thereby increase participation in Dutch Caribbean CRC screening programs. It will also contribute to closer and sustainable cooperation between the islands in early CRC detection and prevention, ultimately reducing CRC-related mortality.