By: Robert Krell, President, Krell Clinical Communications
It seems that the more information that is put into informed consent forms (ICFs); the less they communicate.
Is there a limit to the amount of information a study participant can understand? Perhaps, but that seems unlikely.
Is it that the writers of informed consent documents are just not communicating well enough? I think this is more likely the problem. But it’s not just the writers, it’s also the reviewers and everyone who is involved in the document’s development.
At a meeting with a major pharmaceutical company, we asked who currently writes the informed consent document. The answer was, “the scientists who developed the protocol.” We were not surprised since this is a common practice. In many companies, if the scientists who developed the protocol do not write the first draft of the informed consent document, they have a major role in review and revisions. And rightly so, they understand the protocol better than anyone.
The issue, however, is not who knows more about the protocol. It’s about who knows how to communicate more clearly to a study-participant audience.
If you ask a PhD scientist to explain a protocol point to another scientist, no problem. Now ask the same scientist to explain the point to an eighth-grade student. This might not work as well for several reasons. First, their vocabularies are significantly different. Second, an eighth-grader understands less about both clinical trials and the disease state.
In radio communication, a sender and a receiver must both be at the same frequency for communication to take place. In the case of informed consent documents, it is unfair and impractical to ask the receiver of the information to tune in to the correct frequency. It is simply too high (out of range) for an eighth-grade reader to tune in to a post-graduate reading level. It is possible, however, for the sender of informed consent information to lower the reading level for the study participant. This, of course, would require involving healthcare writers who specialize in writing to lay audiences as the principal authors of informed consent documents.
What we need to keep in mind is that simply putting words on paper is not a measure of how well, or if at all, those words have communicated to the readers. There are other rules of writing an informed consent document that will determine the effectiveness of communication:
- Use familiar vocabulary
- Keep the sentence structure simple
- Keep paragraphs short and relevant to a single topic
- Fully explain unknown concepts at a proper reading level
- Define unfamiliar words in lay terms
- Organize content in an order that is, above all, logical to the reader
- Avoid bad writing and bad organization
- Avoid overly technical protocol details that will not affect the participant
- Use visuals, diagrams, charts, or tables that support key points and explanations
- Lay out the document in a reader-friendly format that will aid complete reading
A good informed consent document is far more than words on paper. It does everything possible to communicate and inform the reader about the study.
What do you think? Keep me informed.