Sleep regularity

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

Highly irregular sleep may link to higher death risk in males

An observational study of 73,647 middle-aged adults suggested that highly irregular sleep schedules had a stronger link to death in males than females.An observational study of 73,647 middle-aged adults suggested that highly irregular sleep schedules had a stronger link to death in males than females.