Automated texts increased stool test completion
Three automated, behavior-based text reminders led to more stool test returns than a nurse telephone reminder in an underserved primary care network.
*Randomized quality-improvement clinical trial; Level 1b (OCEBM).
Citation
Korostoff-Larsson O, King WC, Pelegri E, et al. Behaviorally informed text messaging to promote colon cancer screening: a quality improvement randomized clinical trial. JAMA Network Open. 2026;9(4):e267122. doi:10.1001/jamanetworkopen.2026.7122.
Background
Colon cancer screening rates remain below national goals, especially in low-income and minoritized groups. Low-cost, scalable reminders may increase completion of stool-based screening.
Patients
1275 adults (aged ≥18 years) with a new fecal immunochemical test (stool test) order at 8 federally qualified health centers in Brooklyn, New York; preferred English, Spanish, or Chinese; had not opted out of text messaging. Excluded: opted out of texts, other languages, community program participants, and those with a stool test in the prior 12 months.
Intervention
Up to 3 automated one-way text reminders on days 2, 5, and 8 after ordering.
Control
Usual care: one nurse telephone reminder call on day 8 (as staffing allowed).
Outcome
Stool test completion (returned and processed) within 21 days (primary); also assessed at 14 days.
Follow-up Period
21 days after test order.
Results
| Time point |
Text reminders |
Telephone reminder |
Absolute difference |
NNT |
| Completion by 14 days (primary timepoint reported) |
54.2% (352/649) |
40.3% (252/626) |
+14.0% |
8 |
| Completion by 21 days (primary) |
58.9% (382/649) |
49.8% (312/626) |
+9.0% |
12 |
Analysis was intention-to-treat. Adjusted analysis also favored texts (odds ratio 1.58; 95% confidence interval 1.25 to 2.00).
Limitations
Single safety-net network in one city, limiting generalizability. Groups differed in contact intensity (up to 3 texts vs one call), and many calls were not completed, so results reflect real-world reach more than an “equal-contact” comparison. Only patients with texting enabled and three languages were included. Short follow-up (21 days) does not address longer-term screening adherence.
Funding
NYU Langone Health internal support; no external funding; funder had no role.
Clinical Application
For patients ordered an annual stool test, implement automated reminder texts to improve returns and reduce nursing call burden, while keeping alternate outreach for patients who cannot receive texts.