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Clinical Trials
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Full list of topics
Finding out about a trial :
What are clinical trials and why do we need them?
Different types of clinical trial
Being asked about taking part in a trial
Information and questions
Difficulties finding a trial to join
Deciding whether to take part – risk and benefits :
Reasons for wanting to take part – personal benefit
Reasons for wanting to take part – helping medical science
Deciding not to take part
Thinking about withdrawing from a trial
Why people may not be eligible to join a trial
Being in a trial :
Feelings about being allocated (randomised) to a treatment group
Feelings about being in a placebo-controlled trial
Blinded trials
Non-randomised trial designs and other studies
Side effects and queries
Time commitment, money and other practical issues
Appointments, monitoring, questionnaires
Communication between different health professionals
At the end of a trial :
Feelings when a trial ends
Feedback of trial results
Other issues :
Attitudes to taking part in another trial
Funding and publishing trials
Public awareness and involvement
Under-researched topics/priorities for other research
Messages to other people
Messages to professionals
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Clinical Trials
Subject index
Topic
Medical research
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Clinical Trials
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Communication between different health professionals
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Communication between different health professionals
Communication between different health professionals
Medical research
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Clinical Trials
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Feedback of trial results
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Feedback of trial results
Feedback of trial results
Medical research
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Clinical Trials
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Funding and publishing trials
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Funding and publishing trials
Funding and publishing trials
Medical research
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Clinical Trials
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Being asked about taking part in a trial
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Being asked about taking part in a trial
Being asked about taking part in a trial
Medical research
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Clinical Trials
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Information and questions
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Information and questions
Information and questions
Medical research
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Clinical Trials
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Feelings about being in a placebo-controlled trial
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Feelings about being in a placebo-controlled trial
Feelings about being in a placebo-controlled trial
Medical research
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Clinical Trials
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Non-randomised trial designs and other studies
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Non-randomised trial designs and other studies
Non-randomised trial designs and other studies
Medical research
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Clinical Trials
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Messages to professionals
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Messages to professionals
Messages to professionals
Clip
Medical research
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Clinical Trials
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Not taking part in a trial
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Lesley - Interview 44
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It was hard being asked about a trial when she was feeling shocked and worried. But she understands that timing is important when treatment decisions
Lesley slipped and fractured her heel. She was invited to take part in a trial comparing surgery with letting the bones heal naturally. She decided not to take part because she wanted the consultant to make a decision about treatment.
Medical research
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Clinical Trials
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Screening, prevention other medical interventions
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Sue - Interview 01
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Sue was asked about the trial when the midwife could not hear her baby’s heart and she came for an emergency scan. But she did not feel too stressed o
Sue’s first baby was born by emergency caesarean. In her next pregnancy she took part in a trial looking at different types of information and decision aids about birth choices for women who had already had one caesarean. She was pleased to be involved.
Medical research
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Clinical Trials
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Cancer drugs and radiotherapy - randomised trials
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Wendy - Interview 02
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Wendy felt well-informed and the decision was left entirely up to her. She had two weeks to go away and think about it - more than that might have bee
Wendy was invited to take part in a chemotherapy trial after being diagnosed with bowel cancer. She decided to take part, and was allocated to the experimental group. She experienced quite severe side effects but continued to the end of the treatment.
Medical research
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Clinical Trials
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Not taking part in a trial
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Hazel - Interview 05
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The trial was explained clearly but Hazel felt in limbo when she was sent away to think about it. She just wanted someone to tell her what treatment t
Hazel learnt she had breast cancer (DCIS) after screening in 1991. After surgery she was asked to be in a trial comparing no further treatment with radiotherapy, tamoxifen, or radiotherapy and tamoxifen combined. She declined to take part. (You can see Hazel talking more about her experiences on the Healthtalkonline site on Breast cancer screening, Interview 17 & DCIS, Interview 26).
Medical research
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Clinical Trials
>>
Cancer drugs and radiotherapy - randomised trials
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Rose - Interview 17
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It is important for staff not to try to influence you. If you say yes just because you like the researcher it could cause problems.
Rose took part in a trial for people with inoperable lung cancer, comparing radiotherapy alone with radiotherapy plus chemotherapy. She had just radiotherapy. The trial was stopped early because so few people agreed to take part.
Medical research
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Clinical Trials
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Not taking part in a trial
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Elizabeth - Interview 27
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If someone had mentioned the trial earlier on it would have been less of a shock when she was feeling so vulnerable. The idea needs to be introduced s
Elizabeth was invited to join a trial of chemotherapy for ovarian cancer, but decided not to take part as she knew which treatment she would prefer and did not want to be randomised to another group. She felt the consultant was cross about her decision.
Medical research
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Clinical Trials
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Not taking part in a trial
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Gill - Interview 10
>>
Doctors may want to protect their patients after breaking bad news, but they should not be afraid to ask them about research. Patients may want a chan
Gill discovered she had breast cancer in 2007. She would have liked to take part in a trial to help other women with breast cancer in future, but none was available.
Medical research
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Clinical Trials
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Organising trials
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Lester - Interview 06
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In the trial Lester chaired it was hard to approach patients with CJD (Creutzfeldt-Jakob Disease) in the short time between diagnosis and death.
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
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Clinical Trials
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Not taking part in a trial
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Marie - Interview 25
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Marie did not realise at first the doctor talking to her about the trial worked for a drug company and that the drug company was running the trial, no
Marie was diagnosed with chronic lymphocytic leukaemia in 1992. She was recently invited to take part in a clinical trial of a new monoclonal antibody. At first she thought she would take part but after reading all the details decided against it.
Medical research
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Clinical Trials
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Screening, prevention other medical interventions
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Joanna - Interview 04
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She knows some people who are not interested in trials. She thinks it depends whether the hospital you go to has an active research culture or not.
Joanna took part in a six-year trial of screening for ovarian cancer. She feels some aspects of the trial were not well managed. Her husband, who had leukaemia and died recently, also took part in trials.
Medical research
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Clinical Trials
>>
Cancer drugs and radiotherapy - randomised trials
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Jayne - Interview 03
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When Jayne learnt she had breast cancer in 1994, she knew it was unclear which treatment was best and asked to join a trial. The consultant was dismis
Jayne had breast cancer aged 33. She wanted to join a clinical trial but her consultant was not interested, so she transferred to another hospital and took part in a trial comparing tamoxifen with tamoxifen plus goserelin (Zoladex).
Medical research
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Clinical Trials
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Cancer - Non-randomised studies
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Julian - Interview 33
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Julian asked to be referred to a specialist hospital to take part in a Phase 1 trial. His consultant was a bit worried about the risks, but they discu
Julian has prostate cancer. He is in a Phase 1 trial of a drug (a PARP inhibitor) which may stop cancer cells regrowing in people like him who have the BRCA2 genetic mutation. This mutation increases the risk of prostate and other cancers.
Medical research
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Clinical Trials
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Cancer - Non-randomised studies
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Tom - Interview 14
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Tom believes a public website listing available trials and eligibility criteria would be a good idea. But he knows some doctors disagree, and thinks s
Tom took part in a phase 2 trial of a new chemotherapy drug for lung cancer in 1993. Without the trial, the only other option at the time would have been palliative radiotherapy.
Medical research
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Clinical Trials
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Screening, prevention other medical interventions
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Amanda - Interview 22
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Amanda wanted to run a trial on herself to see if a change of drug made any real difference to her arthritis, but was held up by the ethics approval p
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.
Medical research
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Clinical Trials
>>
Mental health trials
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Fenella - Interview 20
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You can find information about research on the internet, from your local academic department, or your GP or specialist. She asks professionals, “If yo
Fenella took part in a randomised trial of partial hospitalisation compared to standard community treatment for borderline personality disorder. Results showed the group she was in (partial hospitalisation) had better outcomes.
Medical research
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Clinical Trials
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Not taking part in a trial
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Polly - Interview 09
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Polly decided not to take part in a placebo-controlled trial of tamoxifen because she felt there was already enough evidence it worked for breast canc
Polly was invited to be in a trial comparing tamoxifen against a placebo for breast cancer in the 1990s. She decided not to take part, because she felt there was already good evidence to support the use of tamoxifen.
Medical research
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Clinical Trials
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Not taking part in a trial
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Polly - Interview 09
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Polly never felt she got a straight answer about why the trial was needed and whether the doctor would have offered her tamoxifen outside the trial. A
Polly was invited to be in a trial comparing tamoxifen against a placebo for breast cancer in the 1990s. She decided not to take part, because she felt there was already good evidence to support the use of tamoxifen.
Medical research
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Clinical Trials
>>
Not taking part in a trial
>>
Marie - Interview 25
>>
She didn’t like the idea that the trial could be stopped whenever they had enough data. She would have felt like a guinea pig.
Marie was diagnosed with chronic lymphocytic leukaemia in 1992. She was recently invited to take part in a clinical trial of a new monoclonal antibody. At first she thought she would take part but after reading all the details decided against it.
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Marie - Interview 25
>>
She feels you have to be desperate to go on a trial. She wants to live, so she can look after her sick daughter, but she was not desperate enough to t
Marie was diagnosed with chronic lymphocytic leukaemia in 1992. She was recently invited to take part in a clinical trial of a new monoclonal antibody. At first she thought she would take part but after reading all the details decided against it.
Medical research
>>
Clinical Trials
>>
Organising trials
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Lester - Interview 06
>>
When his son was dying, Lester wouldn’t have wanted anything to be intrusive. He knows trials are essential, but at the time it was about helping his
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
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Clinical Trials
>>
Organising trials
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Lester - Interview 06
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Even with experience of helping run a trial, he is unsure if he would volunteer if he was terminally ill. Maybe people should carry something like a d
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Cancer drugs and radiotherapy - randomised trials
>>
Jayne - Interview 03
>>
Jayne explains that blinding to patients and staff is not always possible, but you can still make sure the person analysing the results is blinded to
Jayne had breast cancer aged 33. She wanted to join a clinical trial but her consultant was not interested, so she transferred to another hospital and took part in a trial comparing tamoxifen with tamoxifen plus goserelin (Zoladex).
Medical research
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Clinical Trials
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Long term conditions
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Elvan - Interview 15
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Elvan feels you need to trust your doctors as the experts. It didn’t matter to him which group he was in.
Elvan took part in a trial of medication for hypertension. His blood pressure did not improve much, but he felt well cared for and is glad to have taken part. He has since joined another trial in the same unit.
Medical research
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Clinical Trials
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Not taking part in a trial
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Elizabeth - Interview 27
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It is important that trial results are explained to participants, whether they are positive or negative. People will find out one way or another, and
Elizabeth was invited to join a trial of chemotherapy for ovarian cancer, but decided not to take part as she knew which treatment she would prefer and did not want to be randomised to another group. She felt the consultant was cross about her decision.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Rosamund - Interview 18
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People who organise research have an ethical responsibility to give feedback to participants, but final results may not be available for a long time.
Rosamund is taking part in a large trial testing the effectiveness of screening for ovarian cancer. She is in the control group, so she has no screening tests but completes regular questionnaires.
Medical research
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Clinical Trials
>>
Organising trials
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Sir Richard Doll - Interview 31
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Sir Richard Doll, a pioneer of clinical trials, explains an early attempt to run a randomised trial with wounded soldiers during WWII, and the lack of
Sir Richard Doll was one of the doctors who first demonstrated the link between lung cancer and smoking. He was Warden of Green College, Oxford. He was interviewed shortly before his death, in 2005.
Medical research
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Clinical Trials
>>
Mental health trials
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Fenella - Interview 20
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Every trial has some risk, but medical research is carefully regulated to protect patient safety, and not all trials are about drugs.
Fenella took part in a randomised trial of partial hospitalisation compared to standard community treatment for borderline personality disorder. Results showed the group she was in (partial hospitalisation) had better outcomes.
Medical research
>>
Clinical Trials
>>
Long term conditions
>>
Kate - Interview 13
>>
There was a small risk from the injections of anaphylactic shock, but there were safety precautions in place. They kept a diary to report other reacti
Kate and her husband took part in a trial comparing injections of grass pollen antigen against a placebo as a way to reduce hay fever. Kate was in the experimental group and her husband in the placebo group.
Medical research
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Clinical Trials
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Organising trials
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Lester - Interview 06
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Drug companies will of course research products in order to make money, but the UK has a good system of regulation. Lester is more worried about wheth
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Tony - Interview 36
>>
Tony thinks there are conspiracy theories about the role of the pharmaceutical industry, but he keeps an open mind and does not begrudge them their pr
Tony took part in a double-blind, placebo-controlled trial of Viagra (sildenafil) for erectile dysfunction following a prostate operation. He was in the placebo arm but was given Viagra after the trial ended. (Husband of Pam, Interview 21).
Medical research
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Clinical Trials
>>
Screening, prevention other medical interventions
>>
Amanda - Interview 22
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Amanda worries that commercial trials may suppress ‘negative’ findings. Good research is not cheap, and she feels it should be nationally funded, with
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.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Amanda - Interview 22
>>
Amanda was a member of a research ethics committee and was surprised it was not seen as not part of their role to insist on full publication as a cond
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.
Medical research
>>
Clinical Trials
>>
Long term conditions
>>
Kate - Interview 13
>>
Kate’s charity worked on a study with a drug company, and they found it really difficult to get the results published. She felt the reviewers were pre
Kate and her husband took part in a trial comparing injections of grass pollen antigen against a placebo as a way to reduce hay fever. Kate was in the experimental group and her husband in the placebo group.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Lester - Interview 06
>>
It takes a long time for most trial results to be published. Sometimes when results seem disappointing, researchers may want to carry on, hoping a tre
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Amanda - Interview 22
>>
Amanda has worked on reviews of evidence about medical treatments, and is still shocked sometimes to find out how little evidence we have for some thi
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.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Sir Iain Chalmers - Interview 30
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Iain explains why he thinks randomised trials are the only ethical way to make progress when we don’t know which treatment is best, for example in pro
Iain is a keen advocate for well-designed randomised controlled trials to test treatments.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Sir Iain Chalmers - Interview 30
>>
Iain explains why he thinks randomised trials are the only ethical way to make progress when we don’t know which treatment is best, for example in pro
Iain is a keen advocate for well-designed randomised controlled trials to test treatments.
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Hazel - Interview 05
>>
Hazel feels passionately that the public needs better information about trials. The need to compare things to decide which is best is something people
Hazel learnt she had breast cancer (DCIS) after screening in 1991. After surgery she was asked to be in a trial comparing no further treatment with radiotherapy, tamoxifen, or radiotherapy and tamoxifen combined. She declined to take part. (You can see Hazel talking more about her experiences on the Healthtalkonline site on Breast cancer screening, Interview 17 & DCIS, Interview 26).
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Lester - Interview 06
>>
Lester describes the process of designing and approving a trial, from steering group and systematic review to ethics approval.
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Lester - Interview 06
>>
Lay people can help make trial information leaflets more responsive to patients. There are differences in power and information between doctors and pa
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Leslie - Interview 43
>>
Leslie advises volunteers to check why the research is being done and what has already been found out about the treatment, especially possible side ef
Leslie took part in a placebo-controlled drug trial of rofecoxib (Vioxx) for prostate cancer prevention. He became extremely ill, but doctors monitoring his progress did not pick up his symptoms. He took the drug company to court, and won compensation.
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Polly - Interview 09
>>
Polly advises people to ask a lot of questions and get a second opinion if possible.
Polly was invited to be in a trial comparing tamoxifen against a placebo for breast cancer in the 1990s. She decided not to take part, because she felt there was already good evidence to support the use of tamoxifen.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Sabiha - Interview 19
>>
Appointments at evenings and weekends would make it easier for people. A token payment for their time might also help, and would not put pressure on p
Sabiha took part in a trial of breast screening for younger women (under 50). More recently she volunteered for a trial of cholesterol-lowering drugs but was not eligible because her cholesterol level was too low.
Medical research
>>
Clinical Trials
>>
Mental health trials
>>
Anton - Interview 28
>>
A small payment doesn’t worry him, but if you pay too much it may attract the wrong people. When it’s a commercial company running a trial he expects
Anton has a long history of depression and has volunteered for several different trials in mental health, including trials of talking therapies as well as drug trials.
Medical research
>>
Clinical Trials
>>
Long term conditions
>>
David - Interview 34
>>
David advises people to think carefully about taking part in trials only for money. It’s different when it’s a new treatment for a condition you have.
David volunteered for a placebo-controlled trial of a new treatment derived from mouse DNA to improve asthma symptoms. He later discovered he was in the group taking a lower dose of the treatment, but he would not have minded being in the placebo group.
Medical research
>>
Clinical Trials
>>
Long term conditions
>>
Danny - Interview 26
>>
When Danny’s blood pressure was monitored during the trial, one doctor would never tell her the measurements. She felt she had a right to know and was
Danny joined a trial of high blood pressure medication, but stopped because of side effects. She has concerns about the way some staff communicated with her and a lack of rapport and respect for her as a volunteer interested in her own health.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Lester - Interview 06
>>
Lester advises people to get lots of information. Now he knows more about trials he’d be more likely to take part if his doctor offered one, especiall
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Caroline - Interview 08
>>
Caroline might take part another time, but not in the case of serious illness. She advises others to think carefully before saying yes, ask questions,
Caroline’s first baby was born by emergency caesarean. In her next pregnancy she took part in a trial comparing different types of information and decision aids about birth choices for women after a previous caesarean. She chose to attempt a natural birth.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Caroline - Interview 08
>>
After the birth, Caroline took part in an audit of the information she’d been given. She was made to feel she’d failed a test. It raised wider questio
Caroline’s first baby was born by emergency caesarean. In her next pregnancy she took part in a trial comparing different types of information and decision aids about birth choices for women after a previous caesarean. She chose to attempt a natural birth.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Caroline - Interview 08
>>
Caroline sees it as the job of ethics committees to protect patient interests. Ideally you want patient involvement, but it’s a complicated field, eve
Caroline’s first baby was born by emergency caesarean. In her next pregnancy she took part in a trial comparing different types of information and decision aids about birth choices for women after a previous caesarean. She chose to attempt a natural birth.
Medical research
>>
Clinical Trials
>>
Cancer drugs and radiotherapy - randomised trials
>>
Celia - Interview 12
>>
Celia saw an advert to join the Consumer Liaison Group of the National Cancer Research Institute. She applied, and sits on the complementary therapies
Celia took part in a randomised controlled trial comparing different periods of radiotherapy for lymphoma. She was would have preferred the shorter course; she was allocated to the longer course but took part anyway.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Rosamund - Interview 18
>>
Involving people in research can seem tokenistic, but it’s still useful to have comments on leaflets and questionnaires to make them more understandab
Rosamund is taking part in a large trial testing the effectiveness of screening for ovarian cancer. She is in the control group, so she has no screening tests but completes regular questionnaires.
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Hazel - Interview 05
>>
It’s much easier nowadays for people to get involved in research, but we need to investigate what difference it makes. People can contribute at differ
Hazel learnt she had breast cancer (DCIS) after screening in 1991. After surgery she was asked to be in a trial comparing no further treatment with radiotherapy, tamoxifen, or radiotherapy and tamoxifen combined. She declined to take part. (You can see Hazel talking more about her experiences on the Healthtalkonline site on Breast cancer screening, Interview 17 & DCIS, Interview 26).
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Hazel - Interview 05
>>
Hazel prefers the word ‘people’ to ‘consumers’, and wants partnership with doctors. Individuals can never be ‘representative’ but their views are stil
Hazel learnt she had breast cancer (DCIS) after screening in 1991. After surgery she was asked to be in a trial comparing no further treatment with radiotherapy, tamoxifen, or radiotherapy and tamoxifen combined. She declined to take part. (You can see Hazel talking more about her experiences on the Healthtalkonline site on Breast cancer screening, Interview 17 & DCIS, Interview 26).
Medical research
>>
Clinical Trials
>>
Cancer drugs and radiotherapy - randomised trials
>>
Jayne - Interview 03
>>
Unless you have strong feelings about which trial group you would want to be in, Jayne advises people to take part. She is confident in the system of
Jayne had breast cancer aged 33. She wanted to join a clinical trial but her consultant was not interested, so she transferred to another hospital and took part in a trial comparing tamoxifen with tamoxifen plus goserelin (Zoladex).
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Gill - Interview 10
>>
Doctors may want to protect their patients after breaking bad news, but they should not be afraid to ask them about research. Patients may want a chan
Gill discovered she had breast cancer in 2007. She would have liked to take part in a trial to help other women with breast cancer in future, but none was available.
Medical research
>>
Clinical Trials
>>
Not taking part in a trial
>>
Polly - Interview 09
>>
Professionals need to be very honest with patients, and be sure they really feel the trial is ethical before asking people to take part.
Polly was invited to be in a trial comparing tamoxifen against a placebo for breast cancer in the 1990s. She decided not to take part, because she felt there was already good evidence to support the use of tamoxifen.
Medical research
>>
Clinical Trials
>>
Organising trials
>>
Lester - Interview 06
>>
It comes down to whether you can trust your doctor if they tell you they do not know which treatment is best. Knowing that a trial has ethics approval
Lester’s son Ellis died in 2001 of variant CJD. Lester later became involved as a lay chair of a trial looking at the effectiveness of a drug called quinacrine for people with variant CJD.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Amanda - Interview 22
>>
She wonders if the nurse didn’t want her doing anything extra that might affect the diabetes trial results. But it shouldn’t matter in a randomised tr
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.
Medical research
>>
Clinical Trials
>>
Screening, prevention other medical interventions
>>
Rosamund - Interview 18
>>
Rosamund would not have agreed to take part in a study which did not use randomisation to make the groups comparable – it is the only way to get a rel
Rosamund is taking part in a large trial testing the effectiveness of screening for ovarian cancer. She is in the control group, so she has no screening tests but completes regular questionnaires.
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