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NUHS Sleep Study

Comparing on call versus float schedules on sleep, cognition, well-being and metabolic health

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Doctors are taught to prioritise the health of patients. In providing constant care, working night shifts are a necessary and important part of one's duty.


As important as it is, night shift work does come with challenges to sleep, health, and well-being.

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 these challenges and how schedules can be optimised.


In this study, PGY1 doctors will be keeping records of health-related factors through their daily lives, using state of the art wearable and mobile technology. Our aim is to understand the sleep patterns, metabolic response, and well-being of participants as they go through their shift schedules. Our goal is to gain valuable insights into the effects on-call and float schedules in a manner that balances scientific rigour with non-invasive long-term measurement.


These insights will guide scheduling within NUH for the betterment of present and future doctors.

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