![]() ![]() ( 12), which affects children and their families in short term and long term as well. Increasing evidence demonstrated that sleep deprivation in children was closely related to their physical and mental development, such as language, memory, attention, behavior, cognition, emotion, etc. In the United States, the prevalence of insufficient sleep among middle school students was 57.8% in the year 2015 and 72.7% among high school students ( 11). In adolescents aged 8 to 13 years, 71% of them were identified as short sleepers ( 10). Previous research indicated that the prevalence of insufficient sleep in children displayed an upward tendency with increasing age, and about 10% of children aged 1 to 3 years have sleep problems ( 8), while 15–30% of preschoolers have insufficient sleep ( 9). In children, sleep deprivation has been paid much more attention due to the essential stage of physical and mental development. ![]() Sleep deprivation has been recognized as one of the most common sleep problems encountered by general practitioners ( 7). Insufficient sleep is associated with attention, behavior, and learning problems and increases the risk of injuries, obesity, diabetes, and depression, which is a public health problem globally ( 3– 6). Healthy sleep requires adequate duration, appropriate timing, good quality, regularity, and without sleep disturbance or disorders ( 1, 2). Sleep is essential for optimal health in children. ![]() We recommend that parents should limit the screen time of children, advocate earlier bedtime and later morning wake-up among children, as well as make their children sleep in separate beds or rooms in younger age. TV watching as well as parents accompanying for sleep were associated with insufficient sleep and bedtime delay. Meanwhile, the prevalence of bedtime delay was also higher among the only child in the family (OR = 1.17, 95% CI: 1.06–1.79), among those with parents accompanying for sleep (OR = 1.21, 95% CI: 1.10-1.34), and those with longer TV watching time (OR = 1.13, 95% CI: 1.07–1.18).Ĭonclusions: Insufficient sleep and bedtime delay were prevalent in Chinese children aged 3 to 6 years, especially in boys and older children. The prevalence of insufficient sleep was higher among the only child in the family (OR = 1.18, 95% CI: 1.02–1.36) and those with longer hours of TV watching (OR = 109, 95% CI: 1.02–1.16). With the increase of the age of children, the prevalence of insufficient sleep increased gradually ( P < 0.05). The prevalence of insufficient sleep among boys was slightly higher than among girls. Results: The prevalence of insufficient sleep and bedtime delay among children aged 3 to 6 years was 11.67 and 56.85%, respectively. SAS 9.1.3 software was used to calculate the prevalence of bedtime delay and insufficient sleep, and logistic regression was used to explore potential influencing factors. We defined insufficient sleep as those who slept for < 10 h in children aged 3–5 years or 9 h in children aged 6 years within 24 h, and we define bedtime delay as children with bedtime after 21:00. Data was collected among parents by face-to-face questionnaire interview with signed informed consent. ![]() Methods: In 2018, we selected 8,586 children aged 3 to 6 years and their parents in Songjiang District, Shanghai. However, the prevalence of insufficient sleep and bedtime delay and related influencing factors among kindergarten children is limited in Shanghai, China. Bedtime delay induced by longer screen time and heavy study load is a common cause of sleep deprivation in children. Introduction: Sleep deprivation in children is a global public health problem that affects the physical and mental development of children. 3Songjiang Maternity and Child Health Hospital, Shanghai, China.2School of Public Health, Shanghai University of Traditional Chinese Medicine, Shanghai, China.1Shanghai Skin Disease Hospital, Shanghai, China.Xi Chen 1 †, Yan Qiang 1 †, Xia Liu 2 †, Qing Yang 3, Qingqing Zhu 3, Bin Li 1 * and Ruiping Wang 1 * ![]()
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