Sentences with phrase «publication bias»

Furthermore, we also have to think about publication biases.

The results provide no evidence of marked publication bias, although the statistical power of formal tests was limited by the small number of studies available for analysis.

One 2008 study, for instance, analyzed 16 papers investigating publication bias in randomized clinical trials and found clear indications of selective publication.

We also don't know what the real publication bias was in human trials, so it's hard to compare what has changed.

Besides publication bias, the results may be affected by other forms of bias, such as coding or selection bias.

We suspect that sex differences do emerge in these contexts, although there have been no large scale meta - analyses of this topic that have accounted for publication bias.

Publication bias in clinical trials is the most thoroughly researched aspect of research integrity — having been discussed in detail for over 30 years.

However, the issue is that the larger trials, which is the point that the BCBS TEC assessment made, failed to reach statistical significance on intention to treat analysis, and there was a suggestion of publication bias with the smaller trials.

«The authors of this meta - analysis provide limited evidence to support their contention, and even concede that their own observational findings have not been confirmed in experimental studies and may be influenced by publication bias.»

We examined plots visually to see whether there was any evidence of asymmetry that might suggest different treatment effects in smaller studies, which may indicate publication bias (Harbord 2006).

Simon Festing says that reducing publication bias in animal research would ensure a sound basis to move from animal studies...

After examining all of the studies closely and accounting for possible publication bias — findings from small studies that might have turned up indications of some positive effect — Appleton's group concludes that overall, «there is little evidence of a beneficial effect» of these fish fats on depression.

That could cut down on publication bias.

Begg funnel plots were used to assess potential publication bias (40).

In an ideal world, systematic reviews provide access to all the available evidence on specific exposure — disease associations, but publication bias related to authors» conflicts of interest may affect the reliability of the conclusions of such studies.

A: Registries don't directly decrease publication bias; they just shed more light on it.

Psychologists also tackled problems of publication bias head - on, he said, referring to a tendency for studies that are new and flashy to get more space in the journals than replications of previous work; that's the case even though replications are what show that science is strong.

Publication bias needs to be addressed, because small studies with non-significant result effects usually do not get published.

The failure to know what isn't known: negative publication bias with lamotrigine and a glimpse inside peer review

To investigate the possibility of reporting biases, including publication bias, we will draw funnel plots (Egger 1997; Sterne 2011).

Following the advice of Rothstein (2008), we apply two of the conventional methods that address publication bias.

A violation of funnel plot symmetry reflects publication bias, that is, a selective inclusion of studies showing positive or negative outcomes (Sutton et al. 2000).

This phenomenon is called publication bias and is often referred to as the «file drawer problem» (Rosenthal 1995).

The philosophy behind Registered Reports is that the new format will help improve research transparency and reproducibility by reducing publication bias — journals» favoring of certain types of results — and, consequently, the questionable research practices that some scientists adopt to make their results more likely to be published.

This potential publication bias may impact on the generalisability of our review to non-English speaking countries.

aSummary effect size is not shown owing to concern about publication bias for this outcome.