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OpenTrials
Completed

NCT Number: NCT07355569

The Effect on Attendance of an SMS Notification Prior to a Scheduled Screening Appointment in BreastScreen Norway

This study has been designed as a randomized controlled trial including women invited to a national screening program for breast cancer in Norway, BreastScreen Norway in 2025. The program invites women aged 50-69 to biennial screening mammography. The study includes two substudies with the intervention of sending an SMS notification three days prior to the screening appointment in the first substudy and two days prior to the screening appointment in second study. The comparison is made between the study groups, where women are sent an SMS notification two or three days prior to their scheduled screening appointment and the control groups where women will not be sent an SMS notification about a scheduled screening appointment.

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Key information

Conditions

Attendance Breast Cancer Screening

Age range

50 year–71 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Norwegian Institute of Public Health

Oslo, 222, Norway

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • women invited to BreastScreen Norway residing in the South-Eastern, Central, and Northern Norway Regional Health Authorities

Exclusion criteria

  • no

Treatment and study plan

SMS notification

Other

Available in the NCCR and sent an SMS notification three or two days prior to a scheduled screening appointment

Primary outcomes

  1. Screening attendance

    Time frame: Three months (180 days) after scheduled date for a screening examination following a routine invitation or three months (180 days) after a reminder was posted.

    Attendance after a routine or reminder invitation, with and without an SMS notification

Sponsors and collaborators

Lead sponsor

Norwegian Institute of Public Health

Other Gov

Registry information

Official study title

Sending SMS Notification Prior to a Scheduled Screening Appointment in BreastScreen Norway - the Effect on Attendance

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Jan 21, 2026
Registry last updated
Jan 23, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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