Journal of the Korean society of biological therapies in psychiatry (생물치료정신의학)

The Korean Society of Biological Therapies in Psychiatry (대한생물치료정신의학회)
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The Relationship between Sleep Quality and Depressive Symptoms among University Students : Moderating Effect of the Positive Psychology

대학생들의 수면의 질과 우울증상과의 관계 : 긍정심리의 조절효과

  • Jung, Soo Hyun (Department of Psychiatry, Chosun University College of Medicine) ;
  • Park, Jung Hyun (Department of Psychiatry, Chosun University College of Medicine) ;
  • Yoon, Hyung Jun (Department of Psychiatry, Chosun University College of Medicine) ;
  • Kim, Jung Ho (Department of Psychiatry, Chosun University College of Medicine) ;
  • Kim, Nam Cheol (Department of Medicine, Chosun University Graduate School) ;
  • Kim, Sang Hoon (Department of Psychiatry, Chosun University College of Medicine)
  • 정수현 (조선대학교 의학전문대학원 정신건강의학교실) ;
  • 박정현 (조선대학교 의학전문대학원 정신건강의학교실) ;
  • 윤형준 (조선대학교 의학전문대학원 정신건강의학교실) ;
  • 김정호 (조선대학교 의학전문대학원 정신건강의학교실) ;
  • 김남철 (조선대학교 대학원 의학과) ;
  • 김상훈 (조선대학교 의학전문대학원 정신건강의학교실)
  • Received : 2018.05.08
  • Accepted : 2018.07.10
  • Published : 2018.10.31

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Abstract

Objectives : The aim of study was to estimate the prevalence of poor sleep quality and depressive symptoms as well as to examine the moderating effect of positive psychology on the relationship between poor sleep quality and depressive symptoms among Korean university students. Methods : A total of 2,338(1,071 male and 1,267 female) university students at seven universities of four cities in Korea were randomly selected to participate in a survey. Data were collected by self-report questionnaires, including Pittsburgh Sleep Quality Index(PSQI), Beck Depression Inventory(BDI), Satisfaction with Life Scale(SWLS), Positive Psychotherapy Inventory(PPTI), and sociodemographic characteristics. Results : The prevalence was 44.8% for poor sleep quality and 14.4% for depressive symptoms among Korean university students. By moderated regression analysis, the results showed that poor sleep quality(${\beta}=0.453$, p<0.001) aggravated depressive symptoms of university students, and life satisfaction(${\beta}=-0.087$, p<0.001) and happiness(${\beta}=-0.145$, p<0.001) respectively buffered the negative effect of the poor sleep quality on depressive symptoms. Conclusion : This study showed very high prevalence of poor sleep quality and depressive symptoms among Korean university students. Overall, these findings demonstrates that positive psychology can be effective in the enhancement of subjective and psychological well-being and may help to reduce depressive symptom levels. In the context of public health, positive psychology can be used as preventive, easily accessible and non-stigmatizing tools.

Keywords

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