When you see a negative study
[about the effect of treating mental disorders in a pregnant woman], keep in mind that there is often a lack of information about the mother's diagnosis.
This study found that three levels should be investigated along with immunohistochemistry but that, in the event of a negative study
, further levels may be necessary if clinically warranted (e.
Dr Gibbs implies that the P value of a positive study, or the power of a negative study
, can be used to determine a definitive likelihood that a result reflects reality.
It will be viewed as a largely negative study
and people who are enthusiasts for omega fatty acids will continue to be enthusiasts and people who are sceptics will continue to be sceptics," said Scott Wright of the Mayo Clinic in the United States, who was not involved in the research.
Wedbush Securities analyst Liana Moussatos reaffirmed a "Neutral" rating on the stock with a $15 price target, but said the negative study
results could push shares below $5.
On the downside pharmaceutical stock GlaxoSmithKline remained under pressure falling 27p to 1307p as investors continued to fret over the recent negative study
relating to diabetic drug Avandia.
One study that did not show diuretic activity used the root and another negative study
administered the preparation intraperitoneally.
Other poll findings include that nearly 20 percent recalled the negative study
on vitamin E, and one in ten (10 percent) say they are less likely to take a dietary supplement as a result of recent news coverage.