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Sleep duration trends and trajectories among youth in the COMPASS study

机译：指南针研究中青年的睡眠持续时间趋势和轨迹

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Objectives: Limited Canadian studies have examined youth sleep over time. This study explored sleep duration over recent years among youth, patterns over the course of secondary school, and subgroups at greater risk of sleep deprivation and problematic trajectories. Design: Longitudinal survey. Participants/Setting: Secondary school students in Ontario and Alberta, Canada. Measures and analyses: In cross-sectional analyses, student-reported sleep duration was analyzed in three waves of the COMPASS study (Y_2: 2013/2014, Y_3: 2014/2015, Y_4: 2015/2016), and differences by student-level (race/ethnicity, grade, sex) and school-level (urbanicity, median household income) variables were tested in the most recent wave. For the longitudinal analyses, group-based trajectory modeling was conducted using 3-year linked data, adding risk factors as predictors of problematic trajectories. Results: Average sleep durations declined over the 3 study waves, resulting in less than half of youth meeting the guideline of 8-10 hours per night. Four trajectory groups comprised almost 90% of participants, with 8.8% of students classified as long sleepers, whereas more than one-third of students belonged to 2 sleep-deprived trajectory groups (short [9.3%] and low-normal [26.7%]). In both the cross-sectional and longitudinal analyses, longer sleep durations were more likely among students who identified as male, White, in earlier grades, and attending schools in areas with higher median household income and classified as rural/small urban, relative to their counterparts. Conclusions: Results support the necessity of continued surveillance and interventions to monitor and counteract what appears to be an ongoing trend of diminishing sleep and a growing number of sleep-deprived adolescents. Targeted efforts in less affluent and more metropolitan areas warrant consideration.
机译：目标：有限的加拿大研究检查了年轻人随着时间的流逝。这项研究探讨了近年来青年的睡眠时间，中学过程中的模式以及面积更大的睡眠剥夺风险和有问题的轨迹的亚组。设计：纵向调查。参与者/环境：安大略省和加拿大艾伯塔省的中学学生。措施和分析：在横断面分析中，在指南针研究的三波波浪中分析了学生报告的睡眠持续时间（y_2：2013/2014，y_3：2014/2015，y_4：2015/2016），并通过学生级别的差异（种族/种族，年级，性别）和学校级别（城市化，家庭收入中位数）变量在最近的浪潮中进行了测试。对于纵向分析，使用3年的链接数据进行了基于群体的轨迹建模，从而增加了风险因素作为有问题的轨迹的预测因素。结果：在3个研究浪潮中，平均睡眠时间下降，导致年轻人不到一半的年度指南每晚8-10小时。四个轨迹组占参与者的近90％，其中8.8％的学生分类为长期卧铺，而超过三分之一的学生属于2个睡眠少数轨迹组（短[9.3％]和低正常[26.7％] ）。在横截面和纵向分析中，在较早的男性，白人，年级，在家庭收入中位数较高并归类为农村/小城市的地区的学生中，睡眠时间更长的时间更长同行。结论：结果支持持续监视和干预措施的必要性，以监测和抵消似乎持续减少睡眠和越来越多的睡眠剥夺青少年的趋势。在较少富裕和更多的大都市地区进行的针对性努力值得考虑。

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