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Topic

Observational epidemiology

Study of disease causes and health outcomes in populations by observing exposures, using cohort, case-control and cross-sectional designs rather than trials.

Current stories

scienceOne report1 publisher

Wrist trackers log more broken sleep in long-term cannabis users who rate their sleep no worse than non-users

Northwestern's analysis of 1,266 adults tied cannabis use to more broken sleep on wrist monitors, though users rated their sleep no worse than non-users. The data are observational, so they leave open whether cannabis broke the sleep or poor sleepers reached for cannabis.

Reality

Evidence45
Adoption
Insufficient
Hype gap+40
Incentives45
Confidence55