Are we getting informed consent from patients with cancer?

Area of Science:

• Medical Ethics
• Clinical Trial Design
• Patient Decision-Making

Background:

• Informed consent is crucial for ethical clinical trial participation.
• Patient comprehension of complex trial information, including risks and benefits, can be a significant barrier.

Purpose of the Study:

• To assess patient understanding of pertinent information in a hypothetical clinical trial consent form.
• To evaluate patient interpretation of probability statements within trial contexts.

Main Methods:

• A hypothetical consent form was developed for patient review.
• Patients were asked to identify information pertinent to their trial participation decision.
• Patient interpretation of four distinct probability statements was assessed.

Main Results:

• 74% of 50 patients did not identify both risks and benefits as pertinent.
• Among patients refusing the trial, 70% focused solely on risks.
• Incorrect interpretations of probability statements ranged from 26% to 54%.

Conclusions:

• Patient comprehension of clinical trial consent forms and probability statements is often inadequate.
• Decisions regarding trial entry may be based on incomplete or misunderstood information.
• Improvements in patient education and consent form design are needed to ensure truly informed consent.