title: The Relationship Between Sleep Patterns, Quality of Life, and Social and Clinical Characteristics in Chinese Patients With Schizophrenia.
abstract: OBJECTIVE
  The purpose of the study was to determine the pattern of sleep behavior in schizophrenia patients treated in primary care.
  
  
  METHODS
  Altogether 623 schizophrenia patients in 22 primary care services were recruited. Sleep duration and demographic and clinical characteristics were recorded.
  
  
  RESULTS
  The mean expected total sleep time was 8.8 hr (SD 1.8) and the mean actual total sleep time was 8.2 hr (SD 2.1). The frequency of short, medium, and long sleepers was 18.1, 38.4, and 43.5%, respectively. Major medical conditions and any type of insomnia were independently associated with short sleep, while long sleep was associated with unemployment and use of second-generation antipsychotics.
  
  
  CONCLUSIONS
  More attention should be paid to sleep duration in this population group.
authors.affiliation: Guangdong Mental Health Center, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangdong, China.
authors.forename: Cai-Lan
authors.initials: CL
authors.lastname: Hou
authors.affiliation: Shenzhen Key Laboratory for Psychological Healthcare & Shenzhen Institute of Mental Health, Shenzhen Kangning Hospital & Shenzhen Mental Health Center, Shenzhen, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zang
authors.affiliation: Ningxia Mental Health Center, Ningxia Ning-An Hospital, Yinchuan, China.
authors.forename: Xin-Rong
authors.initials: XR
authors.lastname: Ma
authors.affiliation: Guangzhou Yuexiu Center for Disease Control and Prevention, Guangzhou, China.
authors.forename: Mei-Ying
authors.initials: MY
authors.lastname: Cai
authors.affiliation: Department of Psychiatry, Chinese University of Hong Kong, Hong Kong, SAR, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Guangdong Mental Health Center, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China.
authors.forename: Fu-Jun
authors.initials: FJ
authors.lastname: Jia
authors.affiliation: Guangdong Mental Health Center, Guangdong General Hospital & Guangdong Academy of Medical Sciences, Guangzhou, China.
authors.forename: Yong-Qiang
authors.initials: YQ
authors.lastname: Lin
authors.affiliation: Department of Psychiatry, Chinese University of Hong Kong, Hong Kong, SAR, China.
authors.forename: Helen F K
authors.initials: HFK
authors.lastname: Chiu
authors.affiliation: The University of Notre Dame Australia/Marian Centre, and School of Psychiatry & Clinical Neurosciences, University of Western Australia, Perth, Australia.
authors.forename: Gabor S
authors.initials: GS
authors.lastname: Ungvari
authors.affiliation:  Department of Psychiatry, University of Melbourne, Melbourne, Victoria, Australia.
authors.forename: Chee H
authors.initials: CH
authors.lastname: Ng
authors.affiliation:  Affiliated Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China.
authors.forename: Bao-Liang
authors.initials: BL
authors.lastname: Zhong
authors.affiliation:  Shenzhen Key Laboratory for Psychological Healthcare & Shenzhen Institute of Mental Health, Shenzhen Kangning Hospital & Shenzhen Mental Health Center, Shenzhen, China.
authors.forename: Xiao-Lan
authors.initials: XL
authors.lastname: Cao
authors.affiliation:  Unit of Psychiatry, Faculty of Health Sciences, University of Macau, Macao, SAR, China.
authors.forename: Man-Ian
authors.initials: MI
authors.lastname: Tam
authors.affiliation:  Unit of Psychiatry, Faculty of Health Sciences, University of Macau, Macao, SAR, China.
authors.forename: Yu-Tao
authors.initials: YT
authors.lastname: Xiang
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000627:therapeutic use*; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011320:Primary Health Care / Q000706:statistics & numerical data*; D011788:Quality of Life; D012559:Schizophrenia / Q000188:drug therapy / Q000453:epidemiology* / Q000503:physiopathology; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000453:epidemiology* / Q000503:physiopathology; D014478:Unemployment / Q000706:statistics & numerical data*
chemical_list: D014150:Antipsychotic Agents
keywords: Primary care; schizophrenia; sleep duration