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Sleep recordings can now be carried out in the home using the Oxford Medilog recording system, and analysed automatically by the Oxford Medilog Sleep Stager. The Sleep Stager follows the recommendations of Rechtschaffen and Kales: its purpose is to review a period of recorded sleep, allocate a stage to each epoch and print out the results in the form of a hypnogram and various sleep statistics. Manual and automatic staging of 20 recordings were compared epoch by epoch. Percentage agreement over these recordings ranged from 74 to 89 (mean 84).
Christina Crawford (Tue,) studied this question.