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Text message nudge boosts mammogram attendance in norway

NCT ID NCT07355569

Completed Knowledge-focused Sponsor: Norwegian Institute of Public Health Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether sending a simple SMS reminder a few days before a scheduled mammogram could increase attendance in Norway's national breast cancer screening program. Over 133,000 women aged 50-69 were randomly assigned to receive a reminder either 2 or 3 days before their appointment, or no reminder at all. The goal was to see if a low-cost text message could improve screening rates and help catch cancer earlier.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
SMS notification
What this could lead to
If successful, this could show that simple text reminders boost screening attendance, potentially saving lives through earlier cancer detection.
What could go wrong
This is a completed study, so results are known. The benefit depends on whether SMS reminders actually increase attendance in real-world settings, and it may not apply to other populations or screening programs.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

ATTENDANCE BREAST CANCER SCREENING

Contacts and locations

Locations

  • Norwegian Institute of Public Health

    Oslo, Oslo, 222, Norway

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