A new study has revealed that sleep efficiency is predictive of survival time for women with advanced breast cancer.
According to the scientists, higher sleep efficiency was significantly associated with lower mortality over the ensuing six years and 10 percent increase in sleep efficiency reduced the estimated hazard of subsequent mortality by 32 percent.
Lead author Oxana Palesh, assistant professor in the Department of Psychiatry and Behavioral Sciences at Stanford University, said that they were surprised by the magnitude of the relationship between sleep quality and overall survival even after they accounted for medical and psychological variables that typically predict survival.
Palesh added that good sleep seems to have a strongly protective effect, even with advanced breast cancer.
The study was published in the journal Sleep.
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