Casemix factors may not have been considered sufficientlyBMJ 1995; 311 doi: https://doi.org/10.1136/bmj.311.7004.571b (Published 26 August 1995) Cite this as: BMJ 1995;311:571
- C J Packham
- Senior registrar in public health medicine University Department of Public Health Medicine and Epidemiology, Queen's Medical Centre, Nottingham NG7 2UH
EDITOR,--The results of C J Todd and colleagues' audit report on 90 day mortality after admission to hospitals in East Anglia with fractured hip seem to suggest an impressive survival advantage if a patient is admitted to one particular hospital (hospital 6).1 The authors state that this is probably due to factors associated with the care provided at that hospital.
How can the authors be sure that other …