He said that researchers cannot be certain of the reasons behind the figures, but suggested that it could be related to levels of aftercare at the weekends.
The most important amendment is to change the reference years from 2005-2007 to 2004-2006, as the data for 2007 are so new that we cannot be certain of them, and it is therefore better to use the data that we are sure of.
Analysts say the Republicans view the political environment for 2004 as so unpredictable that they cannot be certain of a sufficient surge to carry them past Democratic incumbents who will have money and know-how to withstand a strong challenge.
Emily Thornberry is leading the review (PA) This would allow Ms Thornberry to argue that Labour cannot be certain of exactly what MPs are approving, which would be unfair to even those who support Trident.
Since all ideas originate in sensation, Regius had to acknowledge that we often come to have ideas that originate from imagined realities and that, in the case of veridical and non-veridical perceptions, the subjective experiences are often sufficiently similar that one cannot be certain of a correspondence between ideas and reality.
However, the low quality of the underpinning evidence means that we cannot be certain of the magnitude of the effects.
To avoid adding to these differences and complications, we chose to report our outcome as asthma without hayfever, rather than non-atopic or non-allergic asthma, and acknowledge the fact that we cannot be certain of the atopic/non-atopic difference with the available data.
The net result is that in many cases, the clinician cannot be certain that correction of the valves is necessary and that such correction will provide adequate relief.
A weakness of our study is that we cannot be certain that our samples of ungulate carcasses were representative of those at which oriental white-backed vultures obtained their food during the period over which their rate of population decline was measured.
