She also questioned the validity of the research as it analysed the impact during seasonal flu: "If it works a little bit in season flu, the chances are they'll work quite a lot better in a pandemic situation and get more people back to school and work."
Kevin McConway, a professor of applied statistics at the Open University, said it was an "impressive" piece of work.
He said: "It is a potential limitation of this study that the work has been carried out alongside campaigning on access to trial data.
"The writers of the review have a clear position in this controversy, and, although I personally do generally agree with their position, I feel it does at times lead to some confusion between reporting the results of the review of these particular drugs and commenting on the general position on access to and use of unpublished data."
The Department of Health, which took the lead for the UK, said Britain was recognised as "one of the best prepared countries in the world for a potential flu pandemic" and "our stockpile of antivirals is a key part of this.
"We regularly review all published data and will consider the Cochrane review closely."
The World Health Organization, which classes Tamiflu as an essential medicine, said: "We welcome a new and rigorous analysis of available data, and look forward to consideration of its findings after it appears."