Compared with usual care, what is the effect of an intervention combining a colorectal cancer (CRC) screening decision aid and patient navigation on CRC screening completion in a diverse, vulnerable primary care population?
In this randomized clinical trial that included 265 patients, the rate of CRC screening completion at 6 months was greater in the intervention arm (68%) than in the control arm (27%), a significant difference.
Given the substantial effect on screening, efforts to understand how this kind of intervention can be more broadly implemented are warranted.
Colorectal cancer (CRC) screening is underused, especially among vulnerable populations. Decision aids and patient navigation are potentially complementary interventions for improving CRC screening rates, but their combined effect on screening completion is unknown.
To determine the combined effect of a CRC screening decision aid and patient navigation compared with usual care on CRC screening completion.
Design, Setting, and Participants
In this randomized clinical trial, data were collected from January 2014 to March 2016 at 2 community health center practices, 1 in North Carolina and 1 in New Mexico, serving vulnerable populations. Patients ages 50 to 75 years who had average CRC risk, spoke English or Spanish, were not current with recommended CRC screening, and were attending primary care visits were recruited and randomized 1:1 to intervention or control arms.
Intervention participants viewed a CRC screening decision aid in English or Spanish immediately before their clinician encounter. The decision aid promoted screening and presented colonoscopy and fecal occult blood testing as screening options. After the clinician encounter, intervention patients received support for screening completion from a bilingual patient navigator. Control participants viewed a food safety video before the encounter and otherwise received usual care.
Main Outcomes and Measures
The primary outcome was CRC screening completion within 6 months of the index study visit assessed by blinded medical record review.
Characteristics of the 265 participants were as follows: their mean age was 58 years; 173 (65%) were female, 164 (62%) were Latino; 40 (15%) were white non-Latino; 61 (23%) were black or of mixed race; 191 (78%) had a household income of less than $20 000; 101 (38%) had low literacy; 75 (28%) were on Medicaid; and 91 (34%) were uninsured. Intervention participants were more likely to complete CRC screening within 6 months (68% vs 27%); adjusted-difference, 40 percentage points (95% CI, 29-51 percentage points). The intervention was more effective in women than in men (50 vs 21 percentage point increase, interaction P = .02). No effect modification was observed across other subgroups.
Conclusions and Relevance
A patient decision aid plus patient navigation increased the rate of CRC screening completion in compared with usual care invulnerable primary care patients.
clinicaltrials.gov Identifier: NCT02054598
Reuland DS, Brenner AT, Hoffman R, McWilliams A, Rhyne RL, Getrich C, Tapp H, Weaver MA, Callan D, Cubillos L, Urquieta de Hernandez B, Pignone MP. Effect of Combined Patient Decision Aid and Patient Navigation vs Usual Care for Colorectal Cancer Screening in a Vulnerable Patient PopulationA Randomized Clinical Trial. JAMA Intern Med. Published online May 15, 2017. doi:10.1001/jamainternmed.2017.1294