Sentences with phrase «from observational studies»

While nearly all the evidence linking physical activity to cancer risk comes from observational studies — people whose physical activity is followed for diagnoses of cancer — the placebo effect can not be denied.

In the past, results from observational studies raised concerns that frequent dairy consumption could increase prostate cancer risk (6, 7).

Strong evidence from observational studies has shown that moderate alcohol consumption is associated with a lower risk of cardiovascular disease.

Results from observational studies however, have been inconsistent and vary by cancer site and other factors, including gender and genetic risk.

Dr. Krauss examined disease outcome data from observational studies of omega - 3 fatty acids and lipid levels.

The current findings are consistent with trials of patients with renal failure, in which calcium supplements were associated with an increase in mortality.13 Few comparable data are available from observational studies of calcium supplements.

As the quality of evidence in favor of home birth from observational studies seems to be steadily increasing, it might be as important to prepare a regularly updated systematic review including observational studies as described in the Cochrane Handbook for Systematic Reviews of Interventions as to attempt to set up new randomized controlled trials.

As the quality of evidence in favour of home birth from observational studies seems to be steadily increasing, it might be as important to prepare a regularly updated systematic review including observational studies as described in the Cochrane Handbook for Systematic Reviews of Interventions as to attempt to set up new randomised controlled trials.

Regarding evidence on growth outcomes from observational studies, the primary concern is confounding due to differences in socioeconomic status, water and sanitation facilities, parental height and weight, and infant weight and length at the time complementary foods were first introduced in the mixed breastfeeding group.

Because almost all the data in this review were gathered from observational studies, one should not infer causality based on these findings.

Most of the current knowledge about vaccine responses comes from observational studies conducted in the latter part of pregnancy, with limited data available from the first and early second trimesters or from randomized clinical trials.

In a metaanalysis including predominantly women from observational studies, high glycemic index diets related to increased risk of T2DM (124).

The following year, however, American researchers published a paper in the same journal, stating that the previous study's findings were «easily explained as chance» and advising readers to «ignore claims from observational studies until replicated.»

Correlations deduced from an observational study do not — in fact, can not — prove causation.

All you can really do with data from an observational study is form a hypothesis, which must then be tested in randomized, controlled trials, to ferret out the truth about whether or not x actually causes y.

«The finding from this observational study that women who underwent menopause at a later age and used oral hormone therapy had greater hearing loss was unexpected but should lead to more testing in a randomized, clinical trial,» says Dr. JoAnn Pinkerton, NAMS executive director.

«Results from our observational study in young adults with normal kidney function may not translate into a clinically meaningful difference and may be insufficient to inform decision - making concerning marijuana use; however, it is possible that the association between marijuana use and kidney function could be different in other populations such as older adults or patients with kidney disease, so additional research is needed,» said Dr. Ishida.

But it's important to note that these results were from observational studies of healthy adults, and there could still be plenty of confounding factors that lead to dementia.

From the observational studies, which consisted of around 406,000 participants in total, the researchers found a link between artificial sweeteners and a small increase in BMI (plus a slight increase in the likelihood of developing Type 2 diabetes).

«Much of our historical data about species» population - level responses to climate change comes from observational studies, which can suggest but not confirm causation,» said Anne Marie Panetta, lead author of the study and a post-doctoral researcher in CU Boulder's Department of Ecology and Evolutionary Biology (EBIO).

However, since these data are from observational studies, it is impossible to be certain of the size of the effect of surgery without randomised controlled trials comparing surgical with non-surgical care.

The first, by researchers based in the UK, Europe and USA, examined data from observational studies and clinical trials (an umbrella review) to summarisze health outcomes associated with vitamin D levels, both naturally circulating and as a result of taking supplements.

Once we have all the data from those animal models and from our observational study we can proceed.

Using data from an observational study, we used sinusoidal regression models to evaluate seasonal variation of nutrient intake, PA, and body weight as amplitude and phase (a time while the measure was at peak).

They are consistent with results from an observational study, 19 suggesting that the parents of children most in need are more likely to accept an invitation to a group than parents of other children, and that these two groups can derive benefit from attending the same group together.