The efficacy of colorectal cancer (CRC) screening is dependent on participation and subsequent adherence to surveillance. The internet is increasingly used for health information and important to support decision-making. We evaluated the accuracy, quality, and readability of online information on CRC screening and surveillance.
There is marked variation in quality and readability of websites on CRC screening. Most websites do not address polyp surveillance. The poor correlation between quality and Google ranking suggests that screenees will miss out on high-quality websites using standard search strategies.