title: Rasch analysis of alcohol abuse and dependence diagnostic criteria in persons with spinal cord injury.
abstract: METHODS
  Cross-sectional.
  
  
  OBJECTIVE
  The objective of the study is to examine whether alcohol use disorders should be conceptualized categorically as abuse and dependence as in the 'Diagnostic and Statistical Manual of Mental Disorders' 4th edition or on a single continuum with mild to severe category ratings as in the 'Diagnostic and Statistical Manual of Mental Disorders' 5th edition in people with spinal cord injury (SCI).
  
  
  METHODS
  United States of America.
  
  
  METHODS
  Data from 379 individuals who sustained SCI either traumatically or non-traumatically after the age of 18 and were at least 1 year post injury. Rasch analyses used the alcohol abuse and dependence modules of the Structured Clinical Interview for DSM-IV-TR Axis I Disorders Non-patient Edition (SCID-I/NP).
  
  
  RESULTS
  Fifty-seven percent (n=166) of the entire sample endorsed criteria for alcohol abuse, and 25% (n=65) endorsed criteria for alcohol dependence. Fit values were generally acceptable except for one item (for example, alcohol abuse criterion 2), suggesting that the items fit the expectation of unidimensionality. Examination of the principal components analysis did not provide support for unidimensionality. The item-person map illustrates poor targeting of items.
  
  
  CONCLUSIONS
  Alcohol abuse and dependence criterion appear to reflect a unidimensional construct, a finding that supports a single latent construct or factor consistent with the DSM-5 diagnostic model.
authors.affiliation: Department of Rehabilitation Psychology and Neuropsychology, Rehabilitation Institute of Michigan, Detroit Medical Center, Detroit, MI, USA.
authors.forename: S
authors.initials: S
authors.lastname: Reslan
authors.affiliation: Department of Physical Medicine and Rehabilitation, University of Michigan School of Michigan, Ann Arbor, MI, USA.
authors.forename: C Z
authors.initials: CZ
authors.lastname: Kalpakjian
authors.affiliation: Department of Rehabilitation Psychology and Neuropsychology, Rehabilitation Institute of Michigan, Detroit Medical Center, Detroit, MI, USA.|Department of Physical Medicine and Rehabilitation, Wayne State University School of Medicine, Detroit, MI, USA.
authors.forename: R A
authors.initials: RA
authors.lastname: Hanks
authors.affiliation: Department of Physical Medicine and Rehabilitation, Wayne State University School of Medicine, Detroit, MI, USA.
authors.forename: S R
authors.initials: SR
authors.lastname: Millis
authors.affiliation: Department of Rehabilitation Medicine, University of Washington School of Medicine, Seattle, WA, USA.
authors.forename: C H
authors.initials: CH
authors.lastname: Bombardier
mesh_terms: D000293:Adolescent; D000328:Adult; D019973:Alcohol-Related Disorders / Q000150:complications / Q000175:diagnosis*; D003430:Cross-Sectional Studies; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D012720:Severity of Illness Index; D013119:Spinal Cord Injuries / Q000150:complications*; D014481:United States