The information on the number of patients who waited less than 13 weeks for an out-patient appointment at Derriford Hospital is not available in the format requested. Information is only available by trust and on the number of patients still waiting under 13 weeks at the end of each month. Plymouth Hospitals NHS Trust had 6,636 out-patients waiting under 13 weeks at the end of March 2009. The trust had one patient waiting over 13 weeks.