title: Prevalence of insomnia and its psychosocial correlates among college students in Hong Kong.
abstract: OBJECTIVE
  this study examined the prevalence of insomnia and its psychosocial correlates among college students in Hong Kong.
  
  
  METHODS
  a total of 529 Hong Kong college students participated in the study.
  
  
  METHODS
  participants completed a self-reported questionnaire that included the Pittsburgh Sleep Quality Index (PSQI), the Revised Life Orientation Test, the Perceived Stress Scale, and the Beck Depression Inventory, and questions about sociodemographic and lifestyle factors. A PSQI global score equal to or greater than 5 indicated insomnia.
  
  
  RESULTS
  results indicated that 68.6% of the participants were insomniacs. Adjusted regression analyses revealed that optimism, stress, and depression significantly predicted insomnia (p < .01).
  
  
  CONCLUSIONS
  these results suggest that insomnia is very common among Hong Kong college students and associated with other psychosocial factors. This study provides preliminary data on sleep quality and risk factors for insomnia, which may be used to guide sleep hygiene promotion and intervention among college students.
authors.affiliation: Department of Applied Social Studies, City University of Hong Kong, Kowloon, Hong Kong.
authors.forename: C Y
authors.initials: CY
authors.lastname: Sing
authors.forename: W S
authors.initials: WS
authors.lastname: Wong
mesh_terms: D000223:Adaptation, Psychological; D003863:Depression / Q000150:complications / Q000523:psychology; D005260:Female; D006305:Health Status Indicators; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D010465:Perception; D015995:Prevalence; D012044:Regression Analysis; D012307:Risk Factors; D012309:Risk-Taking; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology* / Q000523:psychology*; D013315:Stress, Psychological / Q000150:complications / Q000523:psychology*; D055815:Young Adult