A5077485877- Sleep and Work-Related Fatigue
- Sleep and related disorders
- Workplace Health and Well-being
- Consumer Retail Behavior Studies
- COVID-19 Pandemic Impacts
- Nutritional Studies and Diet
- Sleep and Wakefulness Research
- Cognitive Functions and Memory
- Hospital Admissions and Outcomes
- Work-Family Balance Challenges
- Mind wandering and attention
- Healthcare professionals’ stress and burnout
- Circadian rhythm and melatonin
- COVID-19 and Mental Health
- Human Mobility and Location-Based Analysis
National University of Singapore
2021-2025
Duke-NUS Medical School
2019
Country or regional differences in sleep duration are well-known, but few large-scale studies have specifically evaluated variability, either across the work week, terms of weekday and weekend sleep. Sleep measures obtained over 50 million night's sleep, from ∼220,000 wearable device users 35 countries were analysed. Each person contributed an average ∼242 nights data. Multiple regression was used to assess impact country residence had on a duration, timing, efficiency, extension social...
COVID-19 lockdowns drastically affected sleep, physical activity, and wellbeing. We studied how these behaviors evolved during reopening the possible contributions of continued working from home smartphone usage.Participants (N = 198) were through lockdown subsequent period, using a wearable sleep/activity tracker, smartphone-delivered ecological momentary assessment (EMA), passive usage tracking. Work/study location was obtained daily EMA ascertainment.Upon reopening, earlier, shorter sleep...
Abstract Using polysomnography over multiple weeks to characterize an individual’s habitual sleep behavior while accurate, is difficult upscale. As alternative, we integrated measurements from a consumer sleep-tracker, smartphone-based ecological momentary assessment, and user-phone interactions in 198 participants for 2 months. User retention averaged >80% all three modalities. Agreement bed wake time estimates across modalities was high (rho = 0.81–0.92) were adrift of one another...
Importance Extended work hours and night shifts are essential in health care, but negatively affect physician sleep, well-being, patient care. Alternative schedules with shorter and/or reduced irregularity might mitigate these issues. Objective To compare cognition between interns working irregular, extended (call schedule), those a more regular schedule restricted (float schedule). Design, Setting, Participants In this observational longitudinal cohort study, Singapore-based teaching...
Sleep duration, timing and consistency are all important for maintaining good physical health psychological functioning. While differences in sleep duration across countries well-known, fewer large-scale studies characterising variability between weekday weekend have been conducted. The goal of this study was, therefore, to capitalize on the increased use wearable technology characterise nocturnal sleep, changes patterns at a large, globally diverse sample. Using data from over 50 million...
Abstract Background Past studies examining sleep‐cognition relationships mostly employed univariate approaches, which are subject to problems such as multicollinearity and multiple comparisons. Further, results from small sample analyses difficult compare, precluding the identification of aspects sleep health associated with a particular cognitive domain(s). The current study used multivariate approach identify key metrics domains that contribute maximum covariance in healthy older adults....
Abstract Background Past studies examining sleep‐cognition relationships mostly employed univariate approaches, which are subject to problems such as multicollinearity and multiple comparisons. Further, results from small sample analyses difficult compare, precluding the identification of aspects sleep health associated with a particular cognitive domain(s). The current study used multivariate approach identify key metrics domains that contribute maximum covariance in healthy older adults....
The COVID-19 pandemic imposed massive changes to daily lives worldwide. While lockdowns arrived abruptly, the continuation of social-distancing measures like working from home could have longer-term influences. We longitudinally tracked lifestyle behaviors (sleep/physical activity/phone use) and mental wellbeing through lockdown reopening in Singapore. Earlier sleep increased physical activity benefited offices for in-person work. However, this was offset by higher stress poorer mood....
Abstract Introduction The proliferation of wearable and smartphone technologies has enabled continuous monitoring sleep using data from different channels (physiological [wearables], behavioural [phone usage] ecological momentary assessment [EMA self-report]). As these modalities use methods to assess sleep, information gaps suggested by discrepancies between estimates may be filled in through cross-referencing among the produce a more accurate measurement. Moreover, pattern could inform...