Total sleep time variability

Irregular sleep patterns linked to higher risk of death

Among 7,604 US adults aged 20 or older, each one-hour increase in night-to-night sleep-midpoint variability was associated with an all-cause mortality hazard ratio of…Among 7,604 US adults aged 20 or older, each one-hour increase in night-to-night sleep-midpoint variability was associated with an all-cause mortality hazard ratio of 1.22.