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Rural Colon Cancer Screening Toolkit Intervention

Implementing Multilevel Colon Cancer Screening Interventions to Reduce Rural Cancer Disparities

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04651504
Enrollment
185903
Registered
2020-12-03
Start date
2020-12-02
Completion date
2024-12-31
Last updated
2026-08-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colon Cancer Screening

Brief summary

Less than half of all positive fecal immunochemical testing (FIT)s are followed-up by colonoscopy, thus limiting the full potential of colorectal cancer (CRC) screening to reduce mortality. Given the need for coordination in order to achieve high rates of follow-up, multilevel approaches are needed. Such approaches could be particularly beneficial in communities and populations that experience cancer disparities and have fewer specialty providers, but most data focuses on large systems or urban areas. The academic-community health system collaboration is uniquely poised to address this research and service gap. The persistent poverty and health disparities in rural Southern Illinois set the stage for truly impactful research. The investigators' approach will serve as a model for multilevel interventions in rural settings, inform future work addressing other health disparities, and fill a gap in rigorous trials of CRC screening follow-up in rural areas.

Interventions

OTHERColorectal Cancer Toolkit

The intervention toolkit will include patient education materials and supportive materials for providers. Tracking systems and supports will be jointly developed with participating clinic and providers, in order to maximize their existing systems and develop processes that meet their needs and preferences, and training will be offered to help providers/teams efficiently use the tracking system and clinic resources. The study team will provide technical assistance and support through email, phone and zoom to support the clinic in their implementation process.

Sponsors

Washington University School of Medicine
Lead SponsorOTHER
National Institutes of Health (NIH)
CollaboratorNIH
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE

Intervention model description

This is a stepped wedge trial where clusters of sites sequentially enter the intervention. Independent samples of patients are enrolled within a cluster at each set interval of time thus, it is analyzed as a repeated cross-sectional study.

Eligibility

Sex/Gender
ALL
Age
45 Years to 75 Years
Healthy volunteers
Yes

Inclusion criteria

for Primary Care Clinic Sites * Physician Hospital Organization (PHO) affiliated with Southern Illinois Healthcare

Exclusion criteria

for Primary Care Clinic Sites * Not a part of the PHO Inclusion Criteria for Physicians and Staff at Primary Care Clinic Sites * Employment at the relevant clinic at the time of the study

Design outcomes

Primary

MeasureTime frameDescription
Number of Referrals for Colonoscopies After Positive Fecal Immunochemical TestWithin 60 days after receipt of positive FIT/FOBT* Patients between 07/01/2021 - 12/31/2024 that had a fecal immunochemical test (FIT)/fecal occult blood test (FOBT) test performed with a positive result and had an ambulatory referral to Gastroenterology within 60 days of getting the results from the lab test. * Separate data for the Arms cannot be provided, as referrals were not able to be obtained from registry data due to unanticipated registry provider changes prior to study start \& major delays \& staff shortages due to COVID shutdowns, which prevented the collection of colonoscopy referrals. The referral data was obtained from the hospital sites that used EPIC but could not be differentiated by arms. Data for the remaining outcome measures was able to be differentiated by arm as the data came from the registry versus EPIC.
Number of Colonoscopy Completions After Positive Fecal Immunochemical Test (FIT)Within 60 days of referral to Gastroenterology

Secondary

MeasureTime frameDescription
Time to ColonoscopyThrough completion of follow-up (range of 91-1278 days): mean=844 days, standard deviation=440 daysTime between FIT date and colonoscopy.
Proportion of Participants Who Initiate a Colonoscopy Within 14 Days of Positive Fecal Immunochemical TestWithin 14 days of positive fecal immunochemical test
Proportion of Patients Who Complete a Complete Diagnostic Evaluation Within 60 Days of Positive Fecal Immunochemical TestWithin 60 days after receipt of positive FIT/FOBT

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORAimee James, Ph.D., MPH

Washington University School of Medicine

Participant flow

Pre-assignment details

A total of 52 primary care clinics participated in the study. 39 primary care clinics only provided control data. 13 primary care clinics provided control data and participated in the intervention (4 clinics in Step Wedge 1 and 9 clinics in Step Wedge 2). Participants were counted only once during the study (when data was first collected) and did not overlap between period years.

Baseline characteristics

Characteristic
Age, Continuous63.75 years
STANDARD_DEVIATION 10.61
Ethnicity (NIH/OMB)
Hispanic or Latino
479 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
97456 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
19466 Participants
Race (NIH/OMB)
American Indian or Alaska Native
139 Participants
Race (NIH/OMB)
Asian
298 Participants
Race (NIH/OMB)
Black or African American
1939 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
56 Participants
Race (NIH/OMB)
Unknown or Not Reported
25171 Participants
Race (NIH/OMB)
White
149931 Participants
Region of Enrollment
United States
185903 participants
Sex/Gender, Customized
Female
8004 Participants
Sex/Gender, Customized
Male
5845 Participants
Sex/Gender, Customized
Unknown
710 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 00 / 00 / 0
other
Total, other adverse events
0 / 00 / 00 / 0
serious
Total, serious adverse events
0 / 00 / 00 / 0

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 6, 2026