Between 1999 and 2005 the number of annual referrals to the centre increased by 9 percent. Program referrals decreased by 24 percent but 2-week wait around referrals increased by 42 percent. Despite the adjustments in referral patterns the full total number of cancers remained constant over the 7 yr period. Yet the %age was found by the researchers of patients diagnosed with cancer in the 2-week wait group decreased from 12.8 percent to 7.7 percent whilst the amount of cancers detected in the routine group increased from 2.5 percent to 5.3 percent over the same time period.Academics call for more research to understand hospital weekend death risk Two academics from the University of Warwick say more research is needed to understand why patients will die in hospital at the weekend. Professor Richard Lilford and Dr Yen-Fu Chen of the University's Warwick Medical College, raised the issue carrying out a study that states hospital weekend death risk is common in a number of developed countries – not only England Professor Lilford, said: ‘Understanding that is an extremely important task because it is large, in regarding 10 percent in relative risk terms and 0.4 percent in %age point conditions. This quantities to about 160 extra deaths in a medical center with 40,000 discharges each year.