title: Cognitive profile difference between Allen Cognitive Levels 4 and 5 in schizophrenia.
abstract: OBJECTIVE
  We compared the pattern of cognitive deficits exhibited by people with schizophrenia at Allen Cognitive Level (ACL) 4 with that of people at Level 5.
  
  
  METHODS
  Participants were classified into two groups on the basis of their ACL Screen scores: ACL 4 (n = 35) and ACL 5 (n = 41). We assessed cognitive functions and psychotic symptoms in all participants.
  
  
  RESULTS
  Multivariate analysis of covariance controlling for gender and negative symptoms revealed that people at ACL 4 performed significantly worse than those at ACL 5 on processing speed, verbal memory, and working memory. The discriminant analysis with all cognitive variables produced a classification accuracy of 78% in differentiation of cognitive levels.
  
  
  CONCLUSIONS
  We verified the validity of the hierarchy of cognitive disability for ACLs 4 and 5 in people with schizophrenia.
authors.affiliation: Department of Occupational Therapy, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Chwen-Yng
authors.initials: CY
authors.lastname: Su
authors.forename: Pei-Chun
authors.initials: PC
authors.lastname: Tsai
authors.forename: Wei-Lieh
authors.initials: WL
authors.lastname: Su
authors.forename: Tze-Chun
authors.initials: TC
authors.lastname: Tang
authors.forename: Athena Yi-Jung
authors.initials: AY
authors.lastname: Tsai
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003072:Cognition Disorders / Q000150:complications*; D003430:Cross-Sectional Studies; D016002:Discriminant Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009788:Occupational Therapy / Q000379:methods*; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000150:complications* / Q000534:rehabilitation*; D055815:Young Adult