Amanda – Interview 22
Amanda has taken part in a trial of pro-biotic yoghurt for irritable bowel syndrome, and withdrew from a trial about early interventions to prevent diabetes. She is setting up a website for the public to design their own trials.
Amanda is a public health specialist with a long-standing interest in research and trials. She has volunteered for three trials in total, but only taken part in one. The first randomised trial she volunteered for was looking at using medication as an early intervention to prevent diabetes in people at high risk. Volunteers were screened to test their blood sugar levels when they had not eaten for a while Amanda’s was raised so she was eligible for the trial. She was surprised the research nurse on the trial did not have information about other interventions such as diet or exercise which might also prevent diabetes, and wondered if the triallists thought giving people advice about other things they could try might compromise the trial. However, Amanda was fully intending to continue with the trial until she went to see her GP about something else and discovered he had been told she had raised blood sugar, without her consent. This annoyed her so much she withdrew from the trial.
Since then she has completed a randomised trial comparing normal yoghurt with probiotic yoghurt for irritable bowel syndrome. She had to eat two yoghurts a day, and keep a diary of symptoms, which was quite hard to remember accurately. She did not find out until afterwards that she was taking the probiotic yoghurt. She has not yet heard the results of the trial overall; she did not have any symptoms during it. She sometimes felt the research nurse was disappointed that she had no symptoms to report. Amanda feels that blinding is important in trials, because otherwise health staff who are enthusiastic about the possible benefits of a new drug they are testing may be biased in the way they record or interpret findings.
The third trial never got off the ground. Amanda has had rheumatoid arthritis for many years, and was keen to try a new drug because the gold injections she had been having were starting to damage her kidneys. She and her consultant investigated the possibility of doing an n of 1′ trial, a trial where there is only one participant who is given different treatments. The idea was that Amanda would be given alternately a new drug and a placebo, and neither she nor her doctor would know which she was getting. That way they would be more sure that any changes in symptoms could be linked to the drug, rather than to natural cycles in the condition, which tends to come and go. They had found a pharmaceutical company who could help, and were working out how to make sure the placebo looked identical to the real drug, but were told they needed to get ethical approval. This was taking too long and Amanda needed to try the new drug, so they had to abandon the idea of a trial. She thinks it is crazy that she can be given a new drug to try without ethical approval, but not to run a study on herself to see if it actually works.
Amanda is running a website which aims to get the public designing trials and signing up to be randomised on the internet. They hope to do studies comparing selenium against placebo to prevent cancer, early or delayed umbilical cord-clamping after birth, and drinking or not drinking alcohol for six months. Evidence from observation may look strong, but there are many examples where trials show the opposite, so trials research is essential.