Personalized Multilevel Intervention for Improving Appropriate Use of Colorectal Cancer Screening in Older Adults: A Cluster Randomized Clinical Trial
Menée aux Etats-Unis auprès de 431 participants âgés présentant un risque moyen de cancer colorectal et bénéficiant d'une consultation en médecine générale (âge : de 70 à 75 ans), cet essai randomisé évalue, du point de vue du taux d'examens de dépistage prescrits dans les 2 semaines qui suivent la consultation et du point de vue de la pertinence de ces prescriptions, l'intérêt d'une intervention personnalisée (en fonction de l'âge, du sexe, du dépistage antérieur et de la comorbidité) incluant un livret d'aide à la décision contenant des informations détaillées sur les avantages et les inconvénients du dépistage
Importance : Despite guideline recommendations, clinicians do not systematically use prior screening or health history to guide colorectal cancer (CRC) screening decisions in older adults.
Objective : To evaluate the effect of a personalized multilevel intervention on screening orders in older adults due for average-risk CRC screening.
Design, Setting, and Participants : Interventional 2-group parallel unmasked cluster randomized clinical trial conducted from November 2015 to February 2019 at 2 US Department of Veterans Affairs (VA) facilities: 1 academic VA medical center and 1 of its connected outpatient clinics. Randomization at the primary care physician/clinician (PCP) level, stratified by study site and clinical full-time equivalency. Participants were 431 average-risk, screen-due US veterans aged 70 to 75 years attending a primary care visit. Data analysis was performed from August 2018 to August 2023.
Intervention : The intervention group received a multilevel intervention including a decision-aid booklet with detailed information on screening benefits and harms, personalized for each participant based on age, sex, prior screening, and comorbidity. The control group received a multilevel intervention including a screening informational booklet. All participants received PCP education and system-level modifications to support personalized screening.
Main Outcomes and Measures : The primary outcome was whether screening was ordered within 2 weeks of clinic visit. Secondary outcomes were concordance between screening orders and screening benefit and screening utilization within 6 months.
Results : A total of 436 patients were consented, and 431 were analyzed across 67 PCPs. Patients had a mean (SD) age of 71.5 (1.7) years; 424 were male (98.4%); 374 were White (86.8%); 89 were college graduates (21.5%); and 351 (81.4%) had undergone prior screening. A total of 258 (59.9%) were randomized to intervention, and 173 (40.1%) to control. Screening orders were placed for 162 of 258 intervention patients (62.8%) vs 114 of 173 control patients (65.9%) (adjusted difference, −4.0 percentage points [pp]; 95% CI, −15.4 to 7.4 pp). In a prespecified interaction analysis, the proportion receiving orders was lower in the intervention group than in the control group for those in the lowest benefit quartile (59.4% vs 71.1%). In contrast, the proportion receiving orders was higher in the intervention group than in the control group for those in the highest benefit quartile (67.6% vs 52.2%) (interaction P = .049). Fewer intervention patients (106 of 256 [41.4%]) utilized screening overall at 6 months than controls (96 of 173 [55.9%]) (adjusted difference, −13.4 pp; 95% CI, −25.3 to −1.6 pp).
Conclusions and Relevance : In this cluster randomized clinical trial, patients who were presented with personalized information about screening benefits and harms in the context of a multilevel intervention were more likely to receive screening orders concordant with benefit and were less likely to utilize screening.
Trial Registration : ClinicalTrials.gov Identifier: NCT02027545
JAMA Internal Medicine , article en libre accès, 2022