The randomised control trial at three West Midlands hospitals is only half way through.
Many providers of alternative therapy say it is inherently unsuited to double-blind randomised trials.
"This is a randomised clinical trial which is the gold standard for producing evidence, " she added.
This was done by comparing data with findings from the Randomised Badger Culling Trial (RBCT).
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But not everyone's convinced by this reworking of the Randomised Badger Culling Trial with the benefit of hindsight.
The ScanBrit randomised, controlled, single-blind study of a gluten- and casein-free dietary intervention for children with autism spectrum disorders.
And randomised trials in social work were begun in the 1930s and 1940s.
Because of the sensitivity of the issue, researchers who carried out the study decided to adopt the 'randomised response technique method'.
When teaching small children to read, for example, tightly scripted lessons, their exact content and timing honed by randomised trials, do best.
"For the four others investigated, there are no published randomised clinical trials to support their efficacy in weight loss, " Dr Cable added.
Meta-analyses of randomised studies and large observational registries show that radial access reduces procedure access site-related major bleeding compared to femoral access.
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In fact, randomised trials and systematic reviews of evidence were introduced into the social sciences long before they became common in medicine.
They found that observational studies showed a 38% reduced risk of colorectal cancer, matching well to the 42% reduction shown by randomised trials.
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Randomised trials have been used to evaluate the effectiveness of driver-education programmes, job-training schemes, classroom size, psychological counselling for post-traumatic-stress disorder and increased investment in public housing.
Results of methodologically rigorous studies are consistent with those obtained from randomised controlled trials, but sensitivity is particularly dependent on appropriately detailed recording and analysis of aspirin use.
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He added that this randomised, controlled study should provide clarification.
In the first paper (The Lancet), the authors studied individual patient data from 51 randomised trials of daily aspirin versus no aspirin to prevent vascular events such as heart attacks.
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We've learnt from the lessons of the Randomised Badger Culling Trial and turned it into a policy that can be delivered and gives us the benefits of culling in the long term.
The researchers at Harvard couldn't run a randomised controlled trial where half the participants ate burgers for two decades and the other half didn't, but they could use statistical techniques as the next best thing.
Fiona Kirkwood, cardiac nurse for the British Heart Foundation, said recent randomised studies had shown that combined hormone replacement therapy (oestrogen and progesterone) did not provide any protective benefit to women for coronary heart disease.
An examination of 308 studies from the criminal-justice literature, by David Weisburd of the University of Maryland and his colleagues, found that randomised trials were significantly less likely to report positive outcomes than non-randomised studies.
But the major UK investigation, the Randomised Badger Culling Trial (also called the Krebs trial), showed culling only produced a benefit if conducted rigorously and systematically over large areas, ideally with hard boundaries that badgers could not cross.
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That was the emphatic, and damning, conclusion reached by Professor John Bourne, the man charged with assessing the biggest and most comprehensive scientific experiment ever conducted in the British countryside - the Randomised Badger Culling Trial, or RBCT, in June 2007.
The authors did this comparison because while randomised trials of aspirin could clearly establish the risk of colorectal cancer, several other solid cancers, and of metastasis, these trials lacked the statistical power to establish effects on less common cancers and on cancers in women.
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