Among the han and hasake children in Altai city of xinjiang there was high prevalence of sleep disturbances.

• 新疆阿勒泰市汉族和哈族学龄儿童睡眠状况存在令人担忧之处，表现在睡眠障碍总发生率较国内外报导的儿童睡眠障碍发生率均高；