Evaluating the Impact of Evidence-based Information About PSA Testing on Prostate Cancer Screening Decisions

McMaster Choices Study: Evaluating the Impact of Evidence-based Information About PSA Testing on Prostate Cancer Screening Decisions

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03477591

Enrollment

308

Registered

2018-03-26

Start date

2018-10-01

Completion date

2021-07-01

Last updated

2023-10-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostate Cancer

Keywords

Screening, PSA testing, Patient Decision Aid

Brief summary

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 men facing prostate cancer screening decisions.

Detailed description

Guidelines for prostate 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 prostate cancer screening in men.

Interventions

OTHEREvidence-based information

Evidence-based information on PSA testing such as blog posts, plain language evidence summaries and web resource ratings (quality-appraised online resources).

OTHERPatient Decision Aid

Patient Decision Aid for prostate cancer screening decision

OTHERSham information

Educational information not specific to PSA testing or cancer screening

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

SCREENING

Masking

TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

MALE

Age

50 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

* English speaking men, \> 50 years old

Exclusion criteria

* History of prostate cancer or PSA test in the last 12 months

Design outcomes

Primary

Measure	Time frame	Description
Decisional conflict	Change from baseline to 6-mo	Decisional Conflict Scale

Secondary

Measure	Time frame	Description
Decision quality	Change from baseline to 6-mo	Decision Quality Worksheet for PSA testing
Preparation for decision making	Change from baseline to 6-mo	Preparation for decision making scale
Screening behaviour	Change from baseline to 6-mo	Congruency between self-reported screening status and stated decision

Countries

Canada

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026