Evaluating the Impact of Evidence-based Information About Mammography on Breast Cancer Screening Decisions

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McMaster University

Status

Completed

Conditions

Breast Cancer

Treatments

Behavioral: Patient Decision Aid
Other: Sham information
Other: Evidence-based information

Study type

Interventional

Funder types

Other

Identifiers

NCT03631758
4352

Details and patient eligibility

About

Patient decision aids are tools that help guide individuals through a healthcare-related decision making process. They help users combine evidence-based information and recommendations by a health care provider with their personal needs, values and preferences. Through this project, Dr. Dobbins and her research team will explore whether the use of patient decision aids with high-quality and user-friendly summaries of research evidence, or summaries of research evidence alone, help to improve the quality of decision making by women facing breast cancer screening decisions.

Full description

Guidelines for breast screening in Canada are based on low-moderate quality evidence of effectiveness and screening is associated with potential harms. Patient Decision Aids (PDAs) are tools that assist users to understand treatment options, risks and benefits to align decisions with values and preferences. The investigators would now like to know whether use of a PDA alongside evidence-based information provided through the McMaster Optimal Aging Portal, or simply access to evidence-based information alone, can help users to make informed decisions about breast cancer screening in women.

Enrollment

209 patients

Sex

Female

Ages

40 to 49 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • English speaking women, 40-49 years old
  • Residents of British Columbia, Nova Scotia, and Prince Edward Island

Exclusion criteria

  • History of breast cancer or mammography in the last 12 months
  • Classified as above-average risk for breast cancer (i.e., known genetic mutation linked to BC; no genetic testing, but a parent, sibling or child with a genetic mutation linked to BC; or received chest wall radiation before age 30)

Trial design

Primary purpose

Screening

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Triple Blind

209 participants in 3 patient groups

Experimental: Evidence + PDA
Experimental group
Description:
Evidence-based information on mammography such as blog posts, plain language evidence summaries and web resource ratings (quality-appraised online resources), plus a blog post on PDAs and the relevant decision aid from the Portal database
Treatment:
Other: Evidence-based information
Behavioral: Patient Decision Aid
Evidence only
Experimental group
Description:
The same evidence-based information as group 1 (Evidence + PDA), but without the PDA to quantify the effect of accessing evidence through the Portal alone
Treatment:
Other: Evidence-based information
Attention control
Sham Comparator group
Description:
Information on how to distinguish high from low-quality health information, not specific to cancer screening or PDAs
Treatment:
Other: Sham information

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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