Why clinical research needs people of every age and background

What a study learns from its volunteers

A clinical trial measures how a treatment, test or program works in the people who take part. Doctors then use those results to make decisions for patients who look like the volunteers, and for many who do not.

If most volunteers are of one age or background, questions about everyone else are answered less well. Bodies differ with age, with other conditions and with the medicines people already take, and some conditions are more common in some communities than in others.

Who has often been missing

Research teams have long found it harder to reach some groups. These include people aged 65 and over, people who speak a language other than English at home, people with disabilities, people who live far from a large hospital, and people who already manage more than one condition.

That is rarely because those people were not interested. More often the study was hard to reach, the forms were hard to read, the visits clashed with work or caring, or nobody asked.

What is changing

Many study teams now plan for a wider range of volunteers from the start. That can mean translated forms, interpreters, visits closer to home, transport help, and fewer upper age limits.

Those changes go furthest when volunteers say what they need. A request made at the first call gives the team time to arrange it.

Your part, if you want one

Taking part in research is always a choice. Reading about it, asking questions and deciding not to go ahead are all reasonable steps.

• Read about a study before anyone asks you to join.
• Ask what support the team can arrange.
• Talk it over with family and your own doctor.
• Decide in your own time, and change your mind if you need to.

This guide is general information. It is not medical advice, and it does not say whether any study would accept you. Talk to your own doctor about your health.