Sleep midpoint

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.

Limit: Shift work and sleep apnea could explain part of the mortality association

More broken-up rest and activity linked to higher death risk

A 0.1-unit higher score for broken-up rest and activity was linked to 1.15 times the death rate among 3,061 adults.A 0.1-unit higher score for broken-up rest and activity was linked to 1.15 times the death rate among 3,061 adults.