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10
15th July 07:27
External User
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FDA - baloney (psychiatric osteoarthritis scales myeloma)
The American Medical Association seems to agree with you..
http://www.ama-assn.org/ama/pub/category/10619.html
Safeguarding the Quality of Clinical Research
by Joel Lexchin, MD
Three colleagues and I have just published a systematic literature
review demonstrating that pharmaceutical research funded by drug
companies is more than 4 times as likely to favor the drug made by the
sponsor than research funded by other sources [1]. This finding
extended to pharmaceuticals that treat a wide range of diseases such
as osteoarthritis of the knee, multiple myeloma, various psychiatric
problems, Alzheimer’s disease, and venous thromboembolism. The
totality of the evidence reported in our meta-****ysis of a subset of
homogeneous studies suggests that there is some kind of systematic
bias to the outcome of published research funded by the pharmaceutical
industry.
Our results are quite disturbing given that in Canada and the United
States the pharmaceutical industry is the largest direct funder of
medical research. In the US in 2002, the industry outspent the
National Institutes of Health by $26.4 billion to $24 billion [2]. All
of the world’s leading medical journals publish industry-sponsored
research; doctors and scientists need to be able to have confidence in
the conclusions of this research. We are calling for a major push
toward making the process of research and publication more
transparent.
The data we examined did not allow us to reach any definitive answers
about the source of outcome bias, but we think there are 2 possible
sources––publication bias and the use of inappropriate comparator
agents. The reluctance of journals to publish negative findings is a
well-known form of publication bias, but there are other forms this
bias can take. In the case of some negative findings, pharmaceutical
companies may own the data, and, naturally enough, are not interested
in submitting these unfavorable findings to a journal. Researchers may
self-censor, reasoning that if they publish results showing the
inferiority of a company’s products it may be more difficult to obtain
research funding from a company. In some instances, companies help
researchers write up their results because the investigators do not
have the time or lack the necessary skills to do it themselves. Will a
company be willing to assist in writing up a research trial that does
not favor its product?
Appropriate comparative trials between drugs are frequently lacking
and are often replaced by trials against placebos. In instances where
there is a strong placebo effect or where the course of a disease is
highly variable, placebo-controlled trials are justified. In other
instances, however, trials may use a placebo for comparison as a way
of producing positive results for the drug being tested. In trials
where 2 active drugs are being compared, the doses may not be
equivalent. For example, the dose of the comparator may be too
high––leading to more side effects––or too low––leading to lesser
efficacy. It should be noted that, in the literature we examined, we
could not determine who was responsible for the choice of the
comparator agent––the sponsoring company, the investigators, or a
regulatory authority.
Some steps have already been taken to improve the reporting of
randomized clinical trials. An international group of investigators,
statisticians, epidemiologists, and biomedical editors met to revise
the CONSORT statement in 2001 [3]. Journals that follow these
recommendations, give their readers a transparent rationale for why
the study was undertaken and how it was conducted and ****yzed. That
same year, the editors of 13 major medical journals, including JAMA,
CMAJ, and Lancet, issued a declaration regarding publication
requirements for their respective journals. These standards require
authors submitting a manuscript to disclose all financial and personal
relationships between themselves and others that might bias their
work. They must describe the role of the study sponsor(s) in study
design and the collection, ****ysis, and interpretation of data.
Authors must also disclose the trial funders’ involvement in the
writing of the report and the decision to submit for publication; and,
in certain cases, editors may ask authors to sign a statement such as
"I had full access to all of the data in this study, and I take
complete responsibility for the integrity of the data and the accuracy
of the data ****ysis."
In my opinion, and that of my collaborators, more needs to be done to
improve the integrity of clinical research reports. We echo the
repeatedly made suggestion that all clinical trials be registered
prospectively in order to prevent publication bias. Such a registry
would allow interested parties to see if there were trials that did
not make it to publication and ****yze any links between funding
status and publication. We also recommend that authors and editors
consider including a statement about the beliefs of the investigators
prior to conducting research about the uncertainty of the treatments
they plan to study. Uncertainty about the superiority or inferiority
of the different agents being compared would assure readers that
comparators were not chosen to ensure the final outcome of the study.
We recommend other measures such as, to the extent possible,
disengaging pharmaceutical companies from the design of clinical
trials; this is the responsibility of the investigators. Drug
companies should restrict themselves to funding the trials. Assessment
scales for the methodologic quality of research should be expanded to
include a measurement of the appropriateness of the comparator(s). All
journals that publish clinical trials should embrace the statement
from the 13 editors on publication requirements. Finally, readers need
to be alert to the funding sources of clinical trials, whatever they
may be, and take into consideration whether the sponsoring group may
have influenced the trial results.
Reference
1. Lexchin J, Bero LA, Djulbegovic B, Clark O. Pharmaceutical industry
sponsorship and research outcome and quality: systematic review. BMJ
2003;326:1167-70.
2. Pharmaceutical Research and Manufacturers of America. PhRMA:
Industry Profile 2003 (Chapter 2). Available at:
http://www.phrma.org/publications/publications/profile02/2003%20CHAPTER%202.pdf.
Accessed June 30, 2003.
3. The CONSORT statement is an important research tool comprising a
checklist and flow diagram to help improve the quality of reports of
randomized controlled trials. The statement offers a standardized way
for researchers to report trials and is intended to make experimental
process more transparent so that readers can more appropriately
evaluate the study’s validity. See CONSORT. Available at:
http://www.consort-statement.org/. Accessed June 27, 2003.
Joel Lexchin, MD, teaches health policy at York University and also
works as an emergency physician at the University Health Network, both
in Toronto, Canada. He has written extensively on the relationship
between physicians and the pharmaceutical industry and has served as a
consultant on pharmaceutical issues to the province of Ontario, the
Canadian and New Zealand governments, the Australian National
Prescribing Service and the World Health Organization.
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