Payne S, Large S, Jarrett N, Turner P
Lancet. 2000 May 20;355(9217):1792. doi: 10.1016/S0140-6736(00)02272-8.
A national survey of written information given to patients and their families by pallative care units found that 64% of leaflets could be understood by only an estimated 40% of the British population. Many of the leaflets did not meet basic guidelines on legibility and readability.