Patients with NSD from Korean Health Insurance Service database have increased incidence of anxiety, depression, migraine

Lowest cardiovascular disease incidence seen in association with sleep-onset time of 10.00 p.m. to 10.59 p.m.

Higher age-specific death rates at most ages, especially younger ages; higher mortality seen for most leading causes of death

Findings for county-level indicators of mental health in 2019 and county-level infection rates