Abstract:
OBJECTIVE:To create a sleep duration classification technique for waist-worn ActiGraph accelerometers in preschool-aged children. METHODS:Children wore ActiGraph wGT3X-BT accelerometers on their right hip for 7 days (24 h/day). Ground truth nap, sleep, and wake were estimated through visual inspection of accelerometer data, guided by sleep log-sheets and previously published visual inspection heuristics. Raw accelerometer data (30Hz) were used to generate 144 features aggregated to 1-min epochs. Machine learning classification (ie, Random Forest and Hidden Markov Modeling [HMM]) predicted nap, sleep, and wake. A simplified prediction formula was also created using features (n = 10) with the highest mean decrease in Gini index during training of Random Forests, and temporally smoothed with rolling median calculations. RESULTS:Children (n = 89, mean age = 4.5 years, 67% boys) contributed >600,000 min of accelerometer data. Overall classification accuracy of the Random Forest and HMM classifier was 96.2% (95%CI: 96.1, 96.2%), with a Kappa score of 0.93. Additionally, overall classification accuracy for the temporally smoothed simplified formula was 93.7% (95%CI: 93.6, 93.7%) with Kappa = 0.87. Nap prediction accuracy was 99.8% for the final machine learning model, and 86.1% for the simplified formula. For participant-level daily summaries, generally small but statistically significant differences were found between machine learning and ground truth behaviour predictions, whereas non-significant differences were found between the simplified formulas and ground truth predictions. CONCLUSIONS:Predictions for both machine learning and the simplified formula had almost perfect agreement with visual inspection ground truth measurements. Future research is needed to confirm these findings using polysomnography ground truth sleep measurements.
journal_name
Sleep Medjournal_title
Sleep medicineauthors
Kuzik N,Spence JC,Carson Vdoi
10.1016/j.sleep.2020.12.019subject
Has Abstractpub_date
2021-01-08 00:00:00pages
141-148eissn
1389-9457issn
1878-5506pii
S1389-9457(20)30569-4journal_volume
78pub_type
杂志文章相关文献
SLEEP MEDICINE文献大全abstract:INTRODUCTION:Insufficient sleep increases pain sensitivity in healthy individuals. Additionally, extending sleep (eg, increasing nocturnal sleep time or adding a mid-day nap) has been shown to restore pain sensitivity to baseline levels in sleep deprived/restricted individuals. Whether sleep extension can reduce pain s...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2018.10.023
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVES:The present study investigated the effectiveness of a school-based sleep education programme in improving key sleep behaviours, sleep knowledge, and sleep hygiene. DESIGN AND METHODS:A cross-sectional cluster-randomised controlled trial with two groups (Intervention and Control) and three assessment time po...
journal_title:Sleep medicine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.sleep.2015.02.534
更新日期:2015-06-01 00:00:00
abstract:OBJECTIVE:The objective of this study is to measure the relationship between sleep quality and health-related quality of life (HRQOL), in Indian population with type 2 diabetes mellitus (T2DM). METHODS:A cross-sectional study, included a total of 300 patients with T2DM. All participants were responding to the Pittsbur...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2020.04.022
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:The purpose of this study is to examine how the sleep duration changes during adolescence across the seventh, eighth, ninth, and 10th grade periods, and to determine whether there is a difference between the cohorts. METHOD:For these purposes, we used the latent growth curve modeling and the multi-group anal...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2019.10.025
更新日期:2020-03-01 00:00:00
abstract:BACKGROUND:Patients with obstructive sleep apnea syndrome (OSAS) are known to have an increased risk for motor vehicle crashes. They suffer from sleep-related respiratory abnormality causing repetitive arousal leading to daytime sleepiness. In turn, it has been demonstrated that sleepiness can impair human psychomotor ...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2008.11.005
更新日期:2009-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Although upper airway collapsibility (UAC) is theoretically useful to anticipate severity of sleep-disordered breathing (SDB), inspiratory UAC measurements are poorly correlated with obstructive sleep apnea (OSA) severity. PATIENTS AND METHODS:We investigated in 15 healthy and 35 SDB awake subje...
journal_title:Sleep medicine
pub_type: 杂志文章,多中心研究
doi:10.1016/j.sleep.2004.10.013
更新日期:2005-05-01 00:00:00
abstract::Angelman syndrome is a neurogenetic condition characterized by developmental delay, absence of speech, motor impairment, epilepsy and a peculiar behavioral phenotype that includes sleep problems. It is caused by lack of expression of the UBE3A gene on the maternal chromosome 15q11-q13. Although part of the diagnostic ...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2007.07.001
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:To measure CSF biomarkers of hypothalamic dysfunction in patients with typical Kleine-Levin syndrome (KLS) during symptomatic and asymptomatic periods. PATIENTS/METHODS:Two patients with typical KLS were admitted during symptomatic and asymptomatic periods to a research Sleep Disorders Center. Cerebrospinalf...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2014.07.022
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:To characterize the patterns of light exposure and physical activity level and assess their relationship with sleep quality and depressive symptoms in adults with delayed sleep-wake phase disorder (DSWPD). METHODS:42 DSWPD (22 female, mean age 34.5 y) and 26 (±4 years) age-and-sex-matched controls (12 female...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2016.09.009
更新日期:2017-04-01 00:00:00
abstract:OBJECTIVE:Later school start times for adolescents have been implemented in the US and associated benefits found, although no randomised controlled trials (RCT) have been undertaken. The objective of this study was to evaluate the impact of two school interventions in the UK, a delayed start time and a sleep education ...
journal_title:Sleep medicine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.sleep.2018.10.021
更新日期:2019-08-01 00:00:00
abstract:BACKGROUND AND PURPOSE:This study explored the distribution of Epworth Sleepiness Scale (ESS) scores in a randomly sampled, community population and provided percentile scores that will assist in decision-making in both research and clinical settings. PATIENTS AND METHODS:Participants included 703 individuals between ...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2006.01.010
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:The Japanese Sleep Questionnaire for Elementary Schoolers (JSQ-ES) was developed to measure the sleep habits and disturbances of Japanese children. The current study aimed to present psychometric properties and describe the score distribution of the JSQ-ES. In addition, it examined correlations between the sl...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2017.07.025
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:We previously postulated how evolutionary changes in man's upper respiratory tract to facilitate speech, a phenomenon Jared Diamond calls The Great Leap Forward, have predisposed man to obstructive sleep apnea (OSA) [Diamond J. The Third Chimpanzee: the evolution and future of the human animal. N...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2005.03.007
更新日期:2005-11-01 00:00:00
abstract:OBJECTIVE:Cognitive behavior therapy is an effective nonpharmacologic treatment for insomnia. However, individualized administration is costly and often results in substantial variability in treatment response across individual patients, particularly so for older adults. Group-based administration has demonstrated impr...
journal_title:Sleep medicine
pub_type: 临床试验,杂志文章
doi:10.1016/j.sleep.2013.05.008
更新日期:2013-09-01 00:00:00
abstract:OBJECTIVE:Behavioral and physiological indexes of high sleep inertia (SI) characterize the awakening from recovery (REC) sleep after prolonged wakefulness, but the associated electroencephalogram (EEG) topography has never been investigated. Here, we compare the EEG topography following the awakening from baseline (BSL...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2015.03.009
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:Levels of steroid hormones such as androgens and cortisol exhibit circadian variation, and their fluctuations are related to the sleep-wake cycle. Currently, the functional role of different stages of sleep in steroid hormone secretion remains unclear. The present study aims to explore the effect of slow-wav...
journal_title:Sleep medicine
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.sleep.2018.04.012
更新日期:2018-08-01 00:00:00
abstract:OBJECTIVES:Afternoon napping is a common habit in China. We used data obtained from the Dongfeng-Tongji cohort to examine if duration of habitual afternoon napping was associated with risks for impaired fasting plasma glucose (IFG) and diabetes mellitus (DM) in a Chinese elderly population. METHODS:A total of 27,009 p...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2013.04.015
更新日期:2013-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Patients with asthma often complain of daytime sleepiness, which is usually attributed to a direct effect of asthma on nocturnal sleep quality. We investigated this and other potential explanations for daytime sleepiness among asthmatics. PATIENTS AND METHODS:One hundred fifteen adult asthmatics...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2006.02.001
更新日期:2006-12-01 00:00:00
abstract:OBJECTIVE:To assess the association between sleep duration and physical activity and dietary behaviors among adolescents in a representative sample. METHODS:The analysis was performed using data from the 2015 Ningbo Youth Risk Behavior Survey. Associations between physical activity and dietary behaviors and sleep dura...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2017.06.024
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND:Extensive empirical evidence indicates that sleep plays an active role in memory consolidation. Moreover, sleep has been found to preferentially enhance emotional memories and may modulate affective reactions to previously encountered stimuli. Notably, recent findings suggest that disruptions of sleep-relate...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2018.10.030
更新日期:2019-02-01 00:00:00
abstract::A multiple sleep latency test (MSLT) with occurrence of sleep onset REM periods (SOREMP) is considered one of the central diagnostic criteria for narcolepsy according to the International Classification of Sleep Disorders, but its sensitivity and specificity have been questioned. This study aims to describe MSLT and p...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2020.12.037
更新日期:2021-01-02 00:00:00
abstract:BACKGROUND:We aimed to determine if timing of polysomnography (PSG) influences the diagnosis of obstructive sleep apnea (OSA) in acute myocardial infarction (AMI) or stable coronary artery disease (CAD). METHODS:A total of 160 patients admitted with AMI or stable CAD were consecutively recruited for either in-hospital...
journal_title:Sleep medicine
pub_type: 临床试验,杂志文章
doi:10.1016/j.sleep.2013.03.025
更新日期:2013-10-01 00:00:00
abstract:OBJECTIVE:To investigate the associations between sleep disturbances in mid-life and late-life and late-life cognitive status. METHODS:In four population-based studies (three Swedish studies: H70 study, Kungsholmen Project (KP) and The Swedish Panel Study of Living Conditions of the Oldest Old (SWEOLD); and one Finnis...
journal_title:Sleep medicine
pub_type: 杂志文章,多中心研究
doi:10.1016/j.sleep.2017.11.1149
更新日期:2018-12-01 00:00:00
abstract::We describe the first reported case of subclinical rhythmic electrographic discharge of adults (SREDA) during rapid eye movement (REM) sleep. This 48-year-old man, with a history of witnessed apneic spells, was sent for a baseline polysomnogram. Besides demonstrating obstructive sleep apnea, his study showed the occur...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2003.06.001
更新日期:2004-01-01 00:00:00
abstract:PURPOSE:To investigate prevalence and correlates of delayed sleep phase, characterized by problems falling asleep in the evening and rising at adequate times in the morning, in a large sample of Norwegian high school students. METHODS:A randomized sample of 1285 high school students (aged 16-19 years) participated in ...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2011.10.024
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:Poor sleep may be a risk factor for obesity. Previous studies have mainly investigated the effects of sleep duration on body mass index, but research considering overall sleep quality and other anthropometric measures is scarce. The aim of this study was to examine the association between sleep quality and di...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2015.05.023
更新日期:2015-10-01 00:00:00
abstract::This report describes a patient with iron deficiency in bone marrow examination and iron-responsive restless legs syndrome (RLS), in whom serum ferritin levels were well above the conventional cutoff for considering iron deficiency. The predictive value of serum ferritin for iron deficiency in RLS depends on the cutof...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2004.10.008
更新日期:2005-05-01 00:00:00
abstract:OBJECTIVE:The present study was conducted to evaluate serum levels of high-sensitivity C-reactive protein (hs-CRP) in newly diagnosed patients with obstructive sleep apnea (OSA). SUBJECTS AND METHODS:Between April 2005 and March 2006, a total of 231 consecutive adult habitual snorers underwent polysomnography (PSG) in...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2007.02.004
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE AND BACKGROUND:Impaired cerebral blood flow and cerebrovascular reactivity to hypercapnia during wakefulness at rest as well as reduced exercise tolerance have been reported in severe obstructive sleep apnea (OSA) patients. Impaired cerebral oxygenation and hemodynamics can contribute to reduced exercise perf...
journal_title:Sleep medicine
pub_type: 杂志文章
doi:10.1016/j.sleep.2018.06.013
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVES:To examine the potential moderating effect of objectively measured sleep duration at baseline on the response to cognitive behavioral therapy for insomnia (CBT-I), administered singly or combined with medication (CBT-I + Med). METHODS:Based on the average PSG-derived sleep duration across two baseline night...
journal_title:Sleep medicine
pub_type: 临床试验,杂志文章
doi:10.1016/j.sleep.2019.01.016
更新日期:2019-04-01 00:00:00