Effect of Behavioral Interventions on the Uptake of Colonoscopy for Colorectal Cancer Screening: A Systematic Review and Meta-Analysis

Abstract

Introduction: Screening decreases colorectal cancer incidence and mortality, but uptake in the United States remains suboptimal. Prior studies have investigated the effect of various interventions on overall colorectal cancer screening and stool-based testing, but the effect on colonoscopy-the predominant screening test in the United States-has not been fully examined. We performed a systematic review and meta-analysis to assess the effect of behavioral interventions on screening colonoscopy uptake.

Methods: We searched PubMed, Embase, and Cochrane databases through January 2022 for controlled trials that assessed the effect of behavioral interventions on screening colonoscopy uptake. All titles, abstracts, and articles were screened by at least 2 independent reviewers. Odds ratios were extracted from the original article or calculated from the raw data. The primary outcome was the relative increase in screening colonoscopy completion with any behavioral intervention. We performed random-effects meta-analysis, with subgroup analysis by type of intervention.

Results: A total of 25 studies with 30 behavioral interventions were analyzed. The most common interventions were patient navigation (n = 11) and multicomponent interventions (n = 6). Overall, behavioral interventions increased colonoscopy completion by 54% compared with controls (odds ratio [OR] 1.54, 95% confidence interval [CI] 1.26-1.88). Patient navigation (OR 1.78, 95% CI 1.35-2.34) and multicomponent interventions (OR 1.84, 95% CI 1.17-2.89) had the strongest effect on colonoscopy completion among interventions examined in multiple studies. Significant heterogeneity was observed both overall and by intervention type. There was no evidence of publication bias.

Discussion: Behavioral interventions increase screening colonoscopy completion and should be adopted in clinical practice. In particular, patient navigation and multicomponent interventions are the best-studied and most effective interventions.