This is a better relative measure of the fragmentation of your sleep over time compared to total awakenings. For example, 4 awakenings over 8 hours of sleep (0.5/hr) is very different than 4 awakenings over 4 hours of sleep (1/hr).
 

Rules of thumb

  • Less than 0.37 is one indicator of good sleep quality

  • More than 0.68 may indicate poor sleep quality

 

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