RESUMO
Colorectal cancer (CRC) screening has been shown to decrease CRC mortality. Implementation of evidence-based interventions (EBIs) increases CRC screening. The purpose of this analysis is to determine which combinations of EBIs or strategies led to increases in clinic-level screening rates among clinics participating in CDC's Colorectal Cancer Control Program (CRCCP). Data were collected from CRCCP clinics between 2015 and 2018 and the analysis was conducted in 2020. The outcome variable was the annual change in clinic level CRC screening rate in percentage points. We used first difference (FD) estimator of linear panel data regression model to estimate the associations of outcome with independent variables, which include different combinations of EBIs and intervention strategies. The study sample included 486 unique clinics with 1156 clinic years of total observations. The average baseline screening rate was 41 % with average annual increase of 4.6 percentage points. Only two out of six combinations of any two EBIs were associated with increases in screening rate (largest was 6.5 percentage points, P < 0.001). Any combinations involving three EBIs or all four EBIs were significantly associated with the outcome with largest increase of 7.2 percentage points (P < 0.001). All interventions involving 2-3 strategies led to increases in rate with largest increase associated with the combination of increasing community demand and access (6.1 percentage points, P < 0.001). Clinics implementing combinations of these EBIs, particularly those including three or more EBIs, often were more likely to have impact on screening rate change than those implementing none.
RESUMO
INTRODUCTION: The Centers for Disease Control and Prevention administers the Colorectal Cancer Control Program to increase colorectal cancer screening rates among people aged 50-75 years in areas where rates are lower than state or national levels. The aim of this study is to better understand the effectiveness of specific Colorectal Cancer Control Program components. METHODS: The study population included clinics enrolled in the Colorectal Cancer Control Program during Years 1 and 2. Clinic data collected by the Centers for Disease Control and Prevention annually from 2015 to 2017 for program evaluation were used. The outcome variable was screening rate change through Program Year 2, and predictor variables were a new implementation or enhancement of evidence-based interventions and other program components. The analysis, conducted in 2020, used ordinary least square and generalized estimating equations regressions and first difference models to estimate the associations of independent variables with the outcome. RESULTS: Of the total 336 clinics, 50%-70% newly implemented or enhanced different evidence-based interventions. Among these, client reminders were most highly associated with the increase in screening rates (8.0 percentage points). Provider reminder was not significantly associated with any change in screening rates. Among all program components, having a colorectal cancer screening champion was most highly (8.4 percentage points) associated with screening rate change. Results from different models were slightly different but in agreement. CONCLUSIONS: Client reminders, provider assessment and feedback, and colorectal cancer screening champions were associated with increased clinic-level colorectal cancer screening rates. Universal implementation of these strategies can substantially increase colorectal cancer screening rates in the U.S.
