Clinical trial NCT05695235: Monitoring Sleep, Wellbeing, and Glucose Metabolism in PGY1s
Official title: Monitoring Sleep, Wellbeing, and Glucose Metabolism in Postgraduate Year 1 Doctors on Traditional and Float Call Shifts
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Sleep
Glucose Metabolism Disorders
Lead sponsor: National University of Singapore
Sponsor class: OTHER
First posted: 2023-01-23
Enrollment: 80
Sex: ALL
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: NUHS Postgraduate year 1 doctors

Brief summary: Overnight on-call schedules can impact sleep, wellbeing, and alertness, which can be detrimental on the performance, physical and mental health of residents. Moreover, rotating shift work may have a long-term negative health impact (e.g. increased risk of diabetes). Within the National University Hospital (NUH), two different systems of rotating on-call schedules are implemented. In the night float system, residents work from 8 pm to 8 am for 5 - 7 consecutive nights once every month, compared to the traditional overnight on-call system, where each resident is on call for 4-6 nights per month (7 am - 5 pm, followed by overnight call until 8 am the next morning). The aim of the current study is to track sleep, wellbeing, and glucose metabolism during the different phases of the night float and traditional on-call schedules.

Detailed description: Overnight on-call schedules can impact sleep, wellbeing, and alertness, which can be detrimental on the performance, physical and mental health of residents. Moreover, rotating shift work may have a long-term negative health impact (e.g. increased risk of diabetes). Within the National University Hospital (NUH), two different systems of rotating on-call schedules are implemented. In the night float system, residents work from 8 pm to 8 am for 5 - 7 consecutive nights once every month, compared to the traditional overnight on-call system, where each resident is on call for 4-6 nights per month (7 am - 5 pm, followed by overnight call until 8 am the next morning). The aim of the current study is to track sleep, wellbeing, and glucose metabolism during the different phases of the night float and traditional on-call schedules.

The availability of accurate mobile methodologies to monitor sleep and metabolic health provide new avenues for the improvement of sleep health and well-being. Wearable sleep tracking devices and smartphone apps provide remarkable opportunities for non-invasive, longitudinal sleep detection. Measurement of sleep during different stages of the shift schedule (baseline, on-call, recovery) can provide detailed insights into the temporal impact of the different schedules. Moreover, self-reported ratings of sleep quality, wellbeing, and time-use (delivered through phone-based e-diary methods) can further detail the mental health impact associated with these schedules.

Wearable continuous glucose monitoring systems (CGMS) provide a minimally invasive means of passively tracking ambulant interstitial fluid glucose levels in real time.

Eligibility criteria: Inclusion Criteria:

* NUHS Postgraduate year 1 doctors
* Above 21 years of age
* Completing their year 1 rotations in 2021 or 2022

Exclusion Criteria:

* As this is an observational study with minimal risk, in an restricted pool of participants, no further exclusion criteria will be applied for participation.

Primary outcomes:
measure: Sleep
timeFrame: 8 weeks
measure: Wellbeing
timeFrame: 8 weeks
measure: Glucose monitoring
timeFrame: 2 weeks
measure: Alertness
timeFrame: 8 weeks
Secondary outcomes:
Other outcomes:
Locations:
city: Singapore
country: Singapore
facility: National University of Singapore
state: (No States Listed)
Study officials:
References: