ABSTRACT
Despite the global prevalence of colorectal cancer (CRC) and efforts in screening advocacy, screening uptake remains relatively low. Considering the greater accessibility and popularity of telemedicine in behaviour change interventions, this meta-analysis seeks to examine the usefulness of digital interventions in promoting CRC screening uptake as compared to existing non-digital strategies. A systematic search on five databases identified articles published before September 2022. Randomized controlled trials comparing the effectiveness of digital interventions to usual care were included and assessed using the Cochrane's Risk of Bias tool. Effectiveness of interventions was measured by CRC screening completion rates, and pooled effect sizes were computed for both digital intervention subtypes identified - decision-making aids and tailored educational interventions. 14 studies (17,075 participants) assessed to have low or some risk of bias were included in this meta-analysis. A random-effects model revealed that digital interventions were more likely to promote CRC screening uptake (OR = 1.31, 95% CI: 1.11-1.56), and using a decision-making aid was almost 1.5 times more likely to result in screening completion (i.e., completed a colorectal investigation using stool-based or direct visualization test) (OR = 1.42, 95% CI: 1.24-1.63). Meanwhile, the tailored educational intervention subtype failed to achieve statistical significance in promoting screening uptake, bearing in mind the significant heterogeneity across studies (I2 = 88.6%). Digital decision-making aids significantly improved CRC screening uptake compared to tailored digital educational interventions and usual care. However, as all included studies were conducted in Western settings, its role in augmenting existing CRC screening promotion strategies especially among Asians should be further evaluated.
