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sleep log

A daily, written record of a person's sleep wake pattern containing such information as time of retiring and arising, time in bed, estimated total sleep time, number and duration of sleep interruptions, quality of sleep, day time naps, use of medications or caffeine beverages, and nature of waking activities.
Credit

Definition reprinted with permission from Culebras, Antonio, Clinical Handbook of Sleep Disorders, Butterworth-Heinemann