She also supports the Stroke Association, for whom she became a patron in 2010.
The Stroke Association is a charity in the United Kingdom.
Help the Stroke Association and enter a competition at the same time.
Some of you may have seen leaflets about the knitting competition which is being run on behalf of the Stroke Association.
However, the really big prize is that your garment will be sold, after judging, to raise funds for the Stroke Association.
A small study presented at a meeting of the American Stroke Association in 2003 suggested the test.
In a statement, the American Stroke Association said it did not endorse the test.
The Stroke Association is appealing to all knitters to enter their knitting competition.
Your financial support is most welcome and The Stroke Association have produced a catalogue of useful items which are now available by mail order.
The study was presented last week at a conference of the American Stroke Association in Phoenix.