Sentences with phrase «limited number of studies»

Data on total dairy product and total high - fat and low - fat dairy product intakes did not indicate any association with incident CHD, but these results were based on very limited numbers of studies.

As for medical data, supporters of the bill say names and other private information could be scrubbed — but that would likely be expensive and time - intensive, and thus another factor limiting the number of studies the EPA could use to make its environmental protection rules.

Nonetheless, given the relatively limited number of studies that have been carried out to evaluate the relation of glycemic index and / or load with CVD risk, further research is needed in this area.

The limited number of studies that met our inclusion criteria prevented the conduct of statistical analyses of the relationship between industry sponsorship and study results.

Needle in a haystack Acupuncture has been proven to be successful at inducing labour, although only a limited number of studies have been carried out.

However, because of the limited number of studies that reported histologic subtypes, the results should be interpreted with caution.

The subsequent Soviet collapse, scarce funding, imprecise dosimetry, and difficulties tracking people over the years have limited the number of studies and their reliability, he says.

All of this means the bill could limit the number of studies the EPA might consider, if either the courts decide a study is not «reproducible» or if the EPA refrains from using a multiyear study because it believes the research will not meet the bill's «reproducibility» demand.

However, the limited number of studies on high risk women leaves uncertainty for this important subgroup of women.

«Only a limited number of studies have investigated the interplay between specific robust genes associated with the development of alcohol dependence and environments during the critical developmental period of adolescence,» said Bierut.

The limited number of studies and their lack of in - depth analysis of the issue make it almost impossible for us to draw objective conclusions about which lifting tempo promotes better muscle growth.

The limited number of studies available suggest that whilst the infused tea might help to improve relative fat to carbohydrate oxidation, it has no effect on metabolic rate or energy expenditure.

Only a limited number of studies have assessed the fascicle length of the rectus abdominis.

A limited number of studies have described the muscle thickness of the erector spinae.

Only a limited number of studies have investigated the fascicle length of the erector spinae.

The most rigorous and statistically reliable studies will use randomized - assignment control groups - though the much higher costs associated with randomized experiments will limit the number of these studies.

Findings from the limited number of studies that inform the content focus of PD in mathematics suggest that when both content and pedagogy are included as part of the PD, the intervention has a greater potential for positive impact on student achievement than when the PD is focused on content or pedagogy only (Hill, Rowan, & Ball, 2005).

There is very weak veterinary clinical and experimental evidence based upon a limited number of studies to indicate that adding transdermal nitroglycerine to other therapies used for management of left - sided congestive heart failure in dogs speeds the resolution of clinical signs.

The prevalence of congenital deafness in different breeds is seldom known because of the limited number of studies (see table).

The IPCC further shows that «a limited number of studies have explored scenarios that are more likely than not to bring temperature change back to below 1.5 C by 2100».

Though the limited number of studies available makes it difficult to assess confidence levels, potentially severe ecological changes would result from ocean acidification, especially for corals in tropical stably stratified waters, but also for cold water corals, and may influence the marine food chain from carbonate - based phytoplankton up to higher trophic levels (Denman et al., 2007 Section 7.3.4.1; Turley et al., 2006).

Among the limited number of studies, exercise seems to have similar effects to those of some pharmacological treatments, 14 but some meta - analysis studies have yielded inconsistent results.15 — 17 Also, exercise did not always show benefits related to preventing or treating depression because many of the studies did not control for previous levels of depressive symptoms, and only a few included a follow - up period of more than 2 years.

Of the limited number of studies done on Chinese immigrants in North America in the areas of parenting and child development, several showed that Chinese immigrant families who had prolonged parent - child separation experienced elevated risks of socio - emo - tional and behavioral problems in the child, as well as strained parent - child rela - tionships [3][9][20].

There is a range of benefits and challenges identified in a limited number of studies associated with home visiting peer support.

A second limitation is that due to the limited number of studies included in some analyses, not all moderators could be tested for every stress (sub) scale.