procedure
In three large prospective studies, researchers surveyed respondents about sleep duration and followed them for periods ranging from 6 to 14 years, comparing deaths in short or long sleepers against a reference group of people who slept 7 hours, after adjusting for health and demographic factors.
Authors
Sources
- Extent and Health Consequences of Chronic Sleep Loss and ... - NCBI www.ncbi.nlm.nih.gov via serper
Referenced by nodes (1)
- sleep duration concept