Sleep, Well-Being, and Cognition in Medical Interns on a Float or Overnight Call Schedule

This study was initiated as a collaboration between NUHS and the Sleep and Cognition Laboratory at the Yong Loo Lin School of Medicine to understand the impact of different shift schedules on sleep, health and well being. Using 8-weeks of wearables/mobile tracking, we found that medical interns on night-float schedules show more regular and better-quality sleep, and less negative outcomes for mood, motivation and cognition than a 24h overnight-call schedule. On-shift napping benefitted cognition.