New guidance for cluster randomized trials

Press release from PLOS Medicine

2012-11-21

(Press-News.org) In this week's PLOS Medicine, Charles Weijer and colleagues present the Ottawa Statement on the Ethical Design and Conduct of Cluster Randomized Trials, which aims to provide researchers and research ethics committees with detailed guidance on the ethical design, conduct, and review of CRTs.

### Funding: This work was supported by the Canadian Institutes of Health Research (grant numbers MOP85066, MOP89790). CW and JMG hold Tier I Canada Research Chairs. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Members of the Ottawa Ethics of Cluster Randomized Trials Consensus Group participated in this project as individuals and not as representatives of their employers. Authorship does not imply the approval of this document by the authors' employers or other organizations with which they are affiliated.

Competing Interests: The authors have declared that no competing interests exist.

Citation: Weijer C, Grimshaw JM, Eccles MP, McRae AD, White A, et al. (2012) The Ottawa Statement on the Ethical Design and Conduct of Cluster Randomized Trials. PLoS Med 9(11): e1001346. doi:10.1371/journal.pmed.1001346

IN YOUR COVERAGE PLEASE USE THIS URL TO PROVIDE ACCESS TO THE FREELY AVAILABLE PAPER (THIS LINK WILL BECOME LIVE WHEN THE EMBARGO LIFTS):

http://www.plosmedicine.org/article/info%3Adoi%2F10.1371%2Fjournal.pmed.1001346

CONTACT:

Charles Weijer
Rotman Institute of Philosophy
Department of Philosophy
Western University, London, Ontario, Canada,
cweijer@uwo.ca END

ELSE PRESS RELEASES FROM THIS DATE:

Discovery offers new treatment for epilepsy

2012-11-21

New drugs derived from components of a specific diet used by children with severe, drug-resistant epilepsy could offer a new treatment, according to research published today in the journal Neuropharmacology. Scientists from Royal Holloway, in collaboration with University College London, have identified specific fatty acids that have potent antiepileptic effects, which could help control seizures in children and adults. The discovery could lead to the replacement of the ketogenic diet, which is often prescribed for children with severe drug-resistant epilepsy. The ...

Researchers decode birch tree genome sequence for the first time

2012-11-21

Scientists from Queen Mary, University of London have sequenced the genetic code of a birch tree for the first time, which could help protect British birch populations. The genome, which is around 450 million letters, will help researchers understand the genetic basis of traits such as disease resistance and growth shape. There are over sixty species of birch trees around the world, with huge ecological and commercial importance. They are an essential part of the Boreal forest located around the North Pole, which is the world's largest land-based ecosystem. The team ...

Warming to shift heavy rainfall patterns in the UK

2012-11-21

It appears that it's not just us Brits who are fascinated with the UK weather. A group of researchers from Germany has taken to investigating the potential changes in extreme rainfall patterns across the UK as a result of future global warming and has found that in some regions, the time of year when we see the heaviest rainfall is set to shift. The study, published today, 21 November, in IOP Publishing's journal Environmental Research Letters, finds that between 2061 and 2100, the south-east of the country will likely experience its most extreme rainfall later in the ...

Low muscle strength in adolescence linked to increased risk of early death

2012-11-21

Research: Muscular strength in male adolescents and premature death: cohort study of one million participants Low muscle strength in adolescence is strongly associated with a greater risk of early death from several major causes, suggests a large study published on bmj.com today. The effect is similar to well established risk factors for early death like being overweight or having high blood pressure, leading the authors to call for young people, particularly those with very low strength, to engage in regular physical activity to boost their muscular fitness. High ...

Trial results 'do not support the use of general health checks' warn experts

2012-11-21

Research: General health checks in adults for reducing morbidity and mortality from disease: Cochrane systematic review and meta-analysis Editorial: The value of conducting periodic health checks Researchers have found that routine general health checks, which have become common practice in some countries, do not reduce the number of deaths from cardiovascular disease or cancer. They do, however, increase the number of new diagnoses. Health checks were defined as screening for more than one disease or risk factor in more than one organ system offered to a general ...

High-speed video and artificial flowers shed light on mysteries of hummingbird-pollinated flowers

2012-11-21

How flowers have evolved particular colours, shapes and scents to attract pollinators has long fascinated ecologists. Now, using artificial flowers and high-speed video, researchers have gained intriguing insights into the intimate relationship between hummingbirds and the flowers they pollinate. The study, published in the British Ecological Society's journal Functional Ecology, is the first to measure how much energy hummingbirds use while hovering to feed from flowers of different orientation. Hummingbirds are among the smallest and most brightly-coloured birds on Earth, ...

Naerly 90 percent of clinical trialists think data should be more easily shared

2012-11-21

Research: Sharing of clinical trial data among trialists: a cross sectional survey Nearly nine out of ten clinicians carrying out biomedical research trials believe that trial data should be shared more easily, even though they do express some practical concerns, a study published today on bmj.com reveals. BMJ has long championed transparency in medical research. Last month, the journal launched an open data campaign to compel greater accountability in healthcare, and from January 2013, it will require a commitment from trialists to make their data available on reasonable ...

New test for tuberculosis could improve treatment, prevent deaths in Southern Africa

2012-11-21

Boston, MA — A new rapid test for tuberculosis (TB) could substantially and cost-effectively reduce TB deaths and improve treatment in southern Africa—a region where both HIV and tuberculosis are common—according to a new study by Harvard School of Public researchers. "This test is one of the most significant developments in TB control options in many years," said lead author Nicolas Menzies, a PhD candidate in health policy at Harvard School of Public Health. "Our study is the first to look at the long-term consequences of this test when incorporated into routine health ...

Research shows diabetes drug improves memory

2012-11-21

An FDA-approved drug initially used to treat insulin resistance in diabetics has shown promise as a way to improve cognitive performance in some people with Alzheimer's disease. Working with genetically engineered mice designed to serve as models for Alzheimer's, University of Texas Medical Branch at Galveston researchers found that treatment with the anti-insulin-resistance drug rosiglitazone enhanced learning and memory as well as normalized insulin resistance. The scientists believe that the drug produced the response by reducing the negative influence of Alzheimer's ...

UCSB anthropologist studies reciprocity among chimpanzees and bonobos

2012-11-21

(Santa Barbara, Calif.) –– When your neighbor asks to borrow a cup of sugar and you readily comply, is your positive response a function of the give and take that characterize your longstanding relationship? Or does it represent payment –– or prepayment –– for the cup of sugar you borrowed last week, or may need to borrow a month from now? Adrian Jaeggi, a postdoctoral researcher in anthropology at UC Santa Barbara, and a junior research fellow at the campus's SAGE Center for the Study of the Mind, is studying this question of reciprocity, using chimpanzees and bonobos ...

ASH 2025: Study suggests that a virtual program focusing on diet and exercise can help reduce side effects of lymphoma treatment

A sound defense: Noisy pupae puff away potential predators

Azacitidine–venetoclax combination outperforms standard care in acute myeloid leukemia patients eligible for intensive chemotherapy

Measurable residual disease shows strong potential as an early indicator of survival in patients with acute myeloid leukemia

Chemotherapy and radiation are comparable as pre-transplant conditioning for patients with b-acute lymphoblastic leukemia who have no measurable residual disease

New guidance for cluster randomized trials

ELSE PRESS RELEASES FROM THIS DATE:

LAST 30 PRESS RELEASES: