Past studies have shown that early risers are more likely to be thin than late-to-bed types.
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He and his colleagues suspected, however, that the cues for nodding were far more complicated than the past studies had indicated.
The control group may be muddying the waters further, because it survived longer than the researchers would have expected based on past studies.
Past studies have shown women who have lost a baby are more likely to experience anxiety and depression when they get pregnant again.
Past studies have indicated that optimistic answers indicate happy moods.
In December Pfizer stopped testing its experimental good-cholesterol drug, torcetrapib, after it boosted the death rate in a 15, 000-patient trial--even though it raised good cholesterol by 60% in past studies.
Even if other measures catch on, researchers likely will continue to use BMI, if only because that is what is most readily available from past studies, and it allows for comparability.
Past studies have also suggested this - although it has been argued the differences may have arisen as light drinkers may come from a higher income or more educated background than abstainers.
Past studies by the IMF concluded that the global deficit in the 1980s and 1990s was largely due to the underreporting of foreign-investment income by rich countries and the under-recording of freight receipts.
"I think this study really helps to show that when you look across a lot of different people, exercise is a good thing, " Flynn says, noting that past studies have included far fewer women and older people.
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Past studies typically measured people's appetite for risk by asking them to make choices in a laboratory setting between receiving a set amount of cash and playing a lottery with varying odds of winning different amounts of money.
By comparing genomes across thousands of people, researchers identified genetic variations at 24 different points in the human genome that are linked with eye and hair colors, which past studies used to help determine the appearance of people who had died relatively recently.
Gareth Davies, Chief executive of the Cleft Lip and Palate Association, said past studies had indicated that taking folic acid may help prevent cleft lip and palate in so called "high risk" groups but until now there had been no conclusive evidence to back this up.
In the past, studies have shown that taking oestrogen can also increase a woman's risk of endometrial cancer.
Church has participated as a volunteer himself in past medical studies and scoffs at claims that such data can remain anonymous.
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In the past, studies relating mental depression to depression of the immune system have usually been performed on patients stuck in hospital.
"We have participated constructively on a voluntary basis in past authoritative studies which have concluded that inherent and unstable geological conditions at Knipe Point are the most probable reason for the issue, " it added.
In the past several months, studies of Actos and Avandia, from Takeda Pharmaceutical and GlaxoSmithKline, have failed to alleviate safety concerns with those drugs.
Public spending should certainly take the brunt: there is plenty of scope to slim inefficient Leviathan, and studies of past deficit-cutting programmes suggest they work best when cuts predominate.
Mr Kruse and Mr Blasi looked at dozens of studies covering the past two decades.
FTAA. It is a sign of past caution that few such studies exist.
Over the past several years, various studies have yielded conflicting results as to whether viral loads differ between HIV-positive men and women.
In dozens of studies over the past 20 years, Dr. Dainton has found people often say sharing too much is a source of relationship dissatisfaction.
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Studies over the past decade show that people who work at home or outside the office tend to work longer hours, contrary to employers' initial fears.
Although two recent studies found only a slight effect, many studies over the past twenty years have found corporate taxes are paid in large part by workers.
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To be sure, the papers cited are just three studies over the past year and cannot be taken as evidence that there is anything fundamentally wrong with adult stem cells.
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Jenny Craig, Slim Fast and Weight Watchers take the top three spots by way of an aggregation of hundreds of published studies from the past six years.
Additionally two studies in the past few months showed that companies with more women on their boards and startups with more female executives perform better than those with fewer women.
Epidemiologic studies over the past 40 years have identified numerous risk factors for breast cancer, including: older age, an early age at menarche, a late age at first full-term birth, not having children, a family history of breast cancer in a first-degree relative, greater height, higher circulating estrogen levels, postmenopausal hormone use, breast density, history of breast biopsies, obesity (for postmenopausal breast cancer), and exposure to ionizing radiation.
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On the contrary, most studies suggest that the past 25 years have seen a reversal in the trend towards widening inequalities which had been proceeding for two centuries.
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