Purpose:Individual chronotypes are reported to be closely associated with mood,health status,and even disease progression.However,no reports of chronotype distribution in the Chinese population have been made availabl...Purpose:Individual chronotypes are reported to be closely associated with mood,health status,and even disease progression.However,no reports of chronotype distribution in the Chinese population have been made available to date.Methods:We performed a chronotype survey using the classic Morningness–Eveningness Questionnaire both online and offline.The webpage-based online survey was distributed via a social network application on mobile phones.The offline survey was distributed to local primary and middle schools.A total of 9476 questionnaires were collected,of which 8395 were valid.The mean age of the participants was 30.38±11.47 years,and 37.38%were male.Results:Overall,the Chinese chronotypes showed a near-normal distribution with a slight shift toward eveningness.When analyzed in different age groups,the overall Chinese population was shown to be"latest"in their early twenties.In the young population,two significant points of change in chronotype were identified at the ages of 10 and 16 years.The chronotype composition remained relatively stable during early adulthood(from 17 to 28 years of age).Conclusion:This study generated the first overview of chronotype distribution in the Chinese population and will serve as essential background data for future studies.展开更多
目的：评价清晨型与夜晚型量表-5项（Morning and Evening Questionnaire-5,MEQ-5）中文版在技工学校学生中的效度和信度。方法：选取技校学生4479名,使用MEQ-5中文版评定昼夜节律倾向、Epworth困倦问卷评价日间嗜睡程度,并收集社会人...目的：评价清晨型与夜晚型量表-5项（Morning and Evening Questionnaire-5,MEQ-5）中文版在技工学校学生中的效度和信度。方法：选取技校学生4479名,使用MEQ-5中文版评定昼夜节律倾向、Epworth困倦问卷评价日间嗜睡程度,并收集社会人口学资料。2个月后,随机选取其中的535名测评MEQ-19中文版（MEQ-5从中提取）以评定重测信度。结果：95.6%的受试者完成MEQ-5中文版的所有条目填写,用时均小于1 min。80.0%受试者的MEQ-5昼夜节律分型与MEQ-19相同,并于就寝与起床时间的倾向一致。MEQ-5中文版总分正态分布,趋向于单因子结构,方差解释值为51.6%,各条目载荷为0.53-0.71;Chronbachα系数和Spearman Brow n分半信度为0.74和0.59,条目与总分的相关系数为0.42-0.68,重测信度为0.45（P〈0.001）。结论：清晨型与夜晚型量表-5项中文版有较好的效度和信度,耗时较少,可以较好地代表MEQ-19中文版。展开更多
基金supported by grants from the National Natural Science Foundation of China(No.31630091 awarded to Ying Xu,No.81600380 awarded to F.Z.,No.31600958 awarded to Z.L.)National Center for International Research(No.2017B01012)
文摘Purpose:Individual chronotypes are reported to be closely associated with mood,health status,and even disease progression.However,no reports of chronotype distribution in the Chinese population have been made available to date.Methods:We performed a chronotype survey using the classic Morningness–Eveningness Questionnaire both online and offline.The webpage-based online survey was distributed via a social network application on mobile phones.The offline survey was distributed to local primary and middle schools.A total of 9476 questionnaires were collected,of which 8395 were valid.The mean age of the participants was 30.38±11.47 years,and 37.38%were male.Results:Overall,the Chinese chronotypes showed a near-normal distribution with a slight shift toward eveningness.When analyzed in different age groups,the overall Chinese population was shown to be"latest"in their early twenties.In the young population,two significant points of change in chronotype were identified at the ages of 10 and 16 years.The chronotype composition remained relatively stable during early adulthood(from 17 to 28 years of age).Conclusion:This study generated the first overview of chronotype distribution in the Chinese population and will serve as essential background data for future studies.
