title: The China longitudinal ageing study: overview of the demographic, psychosocial and cognitive data of the Shanghai sample.
abstract: BACKGROUND
  China's ageing population will lead to increased neurodegenerative illness and age-related mental health problems.
  
  
  OBJECTIVE
  The Chinese Longitudinal Ageing Study has been developed to better understand the impact of ageing on cognition and mental health. An overview of the sample, major diagnoses and results of the first wave of data collection is presented.
  
  
  METHODS
  One thousand and sixty-eight elderly Chinese (42.2% male), mean age of 72.8 years (SD = 8.5) completed a comprehensive cognitive, psychosocial and mental health assessment.
  
  
  RESULTS
  Mean MMSE score was 24.73 (SD = 6.17). Primary generalised anxiety was detected in 0.4% of the sample. Sub-clinical depression and depressive disorder were diagnosed in 1.7% and 2.4% of the sample, respectively. Most (84.5%) reported subjective memory decline, however 66.5% had no cognitive impairment. Mild Cognitive Impairment (MCI) was detected in 25%, Alzheimer's disease (AD) in 4.7%, vascular dementia in 2.5%, and mixed dementia in 1.3%. Cognition was worse in those 85+ years, but affective disorder rates were not.
  
  
  CONCLUSIONS
  Higher rates of dementia were detected than previously reported in China. Normative data is presented for common cognitive and mental health assessment and screening tasks in a Chinese population. This suggests that the true incidence of dementia has been underestimated, and requires further investigation.
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Shifu
authors.initials: S
authors.lastname: Xiao
authors.affiliation: c Centre for Mental Health and Wellbeing Research, School of Psychology, Deakin University , Burwood , Australia , and.|d Aged Psychiatry Service, Caulfield Hospital, Alfred Health , Caulfield , Australia.
authors.forename: Matthew
authors.initials: M
authors.lastname: Lewis
authors.affiliation: c Centre for Mental Health and Wellbeing Research, School of Psychology, Deakin University , Burwood , Australia , and.
authors.forename: David
authors.initials: D
authors.lastname: Mellor
authors.affiliation: c Centre for Mental Health and Wellbeing Research, School of Psychology, Deakin University , Burwood , Australia , and.
authors.forename: Marita
authors.initials: M
authors.lastname: McCabe
authors.affiliation: c Centre for Mental Health and Wellbeing Research, School of Psychology, Deakin University , Burwood , Australia , and.
authors.forename: Linda
authors.initials: L
authors.lastname: Byrne
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Jinghua
authors.initials: J
authors.lastname: Wang
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Minjue
authors.initials: M
authors.lastname: Zhu
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Yan
authors.initials: Y
authors.lastname: Cheng
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Cece
authors.initials: C
authors.lastname: Yang
authors.affiliation: a Department of Geriatric Psychiatry , Shanghai Mental Health Center, Shanghai Jiaotong University School of Medicine , Shanghai , China .|b Shanghai Jiaotong University, Alzheimer's Disease and Related Disorders Center , Shanghai , China .
authors.forename: Shuhui
authors.initials: S
authors.lastname: Dong
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D001008:Anxiety Disorders / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D060825:Cognitive Dysfunction / Q000453:epidemiology*; D003704:Dementia / Q000453:epidemiology*; D003866:Depressive Disorder / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D011584:Psychology
keywords: Anxiety; China; Dementia; depression; elderly