title: Prevalence and correlates of sleep disturbance and depressive symptoms among Chinese adolescents: a cross-sectional survey study.
abstract: OBJECTIVE
  To investigate the prevalence and the correlates of sleep disturbance and depressive symptoms among Chinese adolescents and to examine the association between the two problems.
  
  
  METHODS
  Cross-sectional survey.
  
  
  METHODS
  A total of 3186 school students in grades 7-12 were sampled from the schools in Guangdong. A stratified-cluster random-sampling strategy was used to select the schools.
  
  
  METHODS
  A self-administered questionnaire was used. The Pittsburgh Sleep Quality index (PSQI) was used to assess the occurrence of sleep disturbance, and the Center for Epidemiology Scale for Depression (CES-D) was used to identify whether individuals had depressive symptoms.
  
  
  RESULTS
  The mean PSQI global score was 8.7 (±2.4) points, and 39.6% of the total sample had sleep disturbance. The mean CES-D score of students was 15.2 (±9.4) points, and 6.4% of the students had depressive symptoms. Additionally, girls and older adolescents were more likely to suffer from sleep disturbance, and the students who had depressive symptoms were 2.47 (95% CI 1.61 to 3.79) times more likely to suffer from sleep disturbance. Factors that were correlated with sleep disturbance and depressive symptoms were having a poor relationship with teachers, feeling lonely, suicide ideation and having run away from home.
  
  
  CONCLUSIONS
  Sleep disturbance was determined to be more prevalent among Chinese adolescents with depressive symptoms. Sleep disturbance and depressive symptoms were associated with each other, while school factors, family factors and psychosocial adjustment were comprehensively correlated with both.
authors: Department of Medical statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.
authors: Lan
authors: L
authors: Guo
authors: Center for ADR monitoring of Guangdong, Guangzhou, People's Republic of China.
authors: Jianxiong
authors: J
authors: Deng
authors: Department of Medical statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.
authors: Yuan
authors: Y
authors: He
authors: Department of Medical statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.
authors: Xueqing
authors: X
authors: Deng
authors: Center for ADR monitoring of Guangdong, Guangzhou, People's Republic of China.
authors: Jinghui
authors: J
authors: Huang
authors: Center for ADR monitoring of Guangdong, Guangzhou, People's Republic of China.
authors: Guoliang
authors: G
authors: Huang
authors: Department of Medical statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.
authors: Xue
authors: X
authors: Gao
authors: Department of Medical statistics and Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China.
authors: Ciyong
authors: C
authors: Lu
mesh_terms: D000293:Adolescent; D002681:China / Q000453:epidemiology; D016000:Cluster Analysis; D003430:Cross-Sectional Studies; D003863:Depression / Q000453:epidemiology*; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D015995:Prevalence; D012307:Risk Factors; D012893:Sleep Wake Disorders / Q000453:epidemiology*; D013334:Students / Q000706:statistics & numerical data; D011795:Surveys and Questionnaires
keywords: EPIDEMIOLOGY; MENTAL HEALTH; PAEDIATRICS