title: [Descriptive epidemiological study on mental disabilities in China].
abstract: OBJECTIVE
  To describe the prevalence and characteristics of mental disabilities in China.
  
  
  METHODS
  The data from the Second National Sample Survey on Disability were analyzed with descriptive epidemiological method and the overall prevalence rates of mental disabilities were statistically calculated.
  
  
  RESULTS
  Among 2 526 145 respondents, 15 155 of them more than 15 years old were diagnosed as mental disabilities, with the prevalence rate as 6.01‰. The prevalence rate of disabilities caused only by mental disorders was 4.57‰ with 11 501 more than 15 years old. The prevalence rate of disability caused only by mental disorders was 4.67‰ with 11 501 adults. Of the disability cases that exclusively caused by mental disorders, 64.58% of them were attributable to schizophrenia, schizotypal or delusional disorders, 6.28% were mood disorder, and 6.27% were epilepsy disability, followed by neurotic, stress-related and somatoform disorders (5.95%), dementia (5.19%), and other disabilities (less than 11.74%). Disabilities that attributable to schizophrenia, schizotypal and delusional disorders caused most severe impairments of functions in daily and social activities, followed by disabilities attributable to dementia, non-dementia organic mental disorder and epilepsy disability. Dementia caused the most severe grade of disability, accounted for 44.89% of all the cases. The data also showed that the disabilities attributable to mood disorder and neurotic, stress-related and somatoform disorder showed more impairments among mental disabilities.
  
  
  CONCLUSIONS
  Prevalence of mental disability in the second sample survey was higher than that of the first survey. Schizophrenia accounted for most of the mental disabilities but dementia caused the severest disability among all the cases with mental problems. As two of main causes of mental disabilities, neurosis and anxiety disorders should also be paid attention to.
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Yuntao
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China. Email: huangyq@bjmu.edu.cn.
authors.forename: Yueqin
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Yating
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Heng
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Zhaorui
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Wentian
authors.initials: W
authors.lastname: Dong
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: Key Laboratory of Mental Health in Ministry of Health, Institute of Mental Health, the Affiliated Sixth Hospital, Peking University, Beijing 100191, China.
authors.forename: Guizhong
authors.initials: G
authors.lastname: Yao
mesh_terms: D000293:Adolescent; D000328:Adult; D002681:China / Q000453:epidemiology; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology; D001523:Mental Disorders / Q000453:epidemiology*; D008875:Middle Aged; D015995:Prevalence