Amin Salehi-Abargouei, Afshin Shiranian, Simin Ehsani, Pamela J Surkan, Ahmad Esmaillzadeh
Caesarean delivery is associated with childhood general obesity but not abdominal obesity in Iranian elementary school children
Acta paediatrica (Oslo, Norway : 1992)
sleep essential life accurate measurement classification sleepwake sleep stages important clinical studies sleep disorder diagnoses interpretation data consumer devices monitoring physical mental wellbeing existing nonpolysomnography sleep classification techniques mainly rely heuristic methods developed relatively small cohorts thus aimed establish accuracy wristworn accelerometers sleep stage classification subsequently describe association sleep duration efficiency proportion total time asleep bed mortality outcomes developed selfsupervised deep neural network sleep stage classification using concurrent laboratorybased polysomnography accelerometry exclusion 1448 participant nights data used training difference polysomnography model classifications external validation 347 min 95 limits agreement loa 3781072 min total sleep duration 26 min rem duration 95 loa 684734 min 321 min 95 loa 5441185 min nrem duration sleep classifier deployed uk biobank 100000 participants study association sleep duration sleep efficiency allcause mortality among 66214 uk biobank participants 1642 mortality events observed short sleepers 6 h higher risk mortality compared participants normal sleep duration 679 h regardless whether low sleep efficiency hazard ratios hrs 158 95 confidence intervals cis 119211 high sleep efficiency hrs 145 95 cis 116181 deeplearningbased sleep classification using accelerometers fair moderate agreement polysomnography findings suggest short overnight sleep confers mortality risk irrespective sleep continuity