NCT07220018 · George Washington University
Colorectal Cancer Screening in the Homeless
What this study is about
This study is designed to assess the effect of implementing a text messaging strategy for colorectal cancer screening among homeless persons aged 45-75 years, who are not up to date on colorectal cancer screening, in shelter clinics in NYC. This mixed-methods study uses a randomly assigned clinical trial design and semi-structured interviews.
View original scientific description
This study is designed to assess the effect of implementing a text messaging strategy for colorectal cancer screening among homeless persons aged 45-75 years, who are not up to date on colorectal cancer screening, in shelter clinics in NYC. This mixed-methods study uses a randomized clinical trial design and semi-structured interviews.
Interventions
BEHAVIORAL
mHealth for Colorectal cancer screening in Homeless Persons
Specific colorectal cancer educational SMS text messages are sent to participants' mobile phones
OTHER
Control SMS Messages
Standard health information SMS text messages sent to participants' mobile phones
Primary outcome measures
Completion of CRC Screening
Time frame: 6 months
Completed rates of CRC screenings (colonoscopy or FIT test)
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Homeless persons aged 45 - 75 years old, with no up-to-date colorectal cancer screening defined as: 1) no colonoscopy in the past 10 years, or 2) no Flexible sigmoidoscopy, Digital Contrast Barium Enema, or CT colonoscopy in the past 5 years, or 3) no Fecal Immunochemical Test/Fecal Occult Blood in the past 12 months or mt-sDNA/Cologuard Test in the past three years
- English or Spanish speaking
- currently presenting to the shelter clinics for medical care
- connected to multidisciplinary social and health services in NYC shelter clinics
Exclusion criteria
- known active/uncontrolled illness rendering homeless persons to undergo screening, CRC in the past 2 years, colectomy, Inflammatory Bowel Dis., Familial Adenomatous Polyposis or other colorectal diseases in which screening is different from average CRC risk and methods, inability to consent, serious/significant comorbidity where life expectancy is limited or screening is not recommended, which will be verified by their respective provider
- inability to read and respond to SMS texts
- any condition preventing participants from providing informed consent.
Where
- Washington D.C., District of Columbia
Collaborators
National Institute on Minority Health and Health Disparities (NIMHD)
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 15, 2026 · Source of record for eligibility and locations