title: Development and psychometrics of the five item daily index in a psychiatric sample.
abstract: BACKGROUND
  Effective treatment of affective disorders requires the ability to reliably monitor patient progress and outcome. The current study aimed to establish the Daily Index-5 (DI-5) as a psychometrically sound and clinically valid measure of treatment response in psychiatric care for use as a companion measure with the WHO Wellbeing Index (WHO-5; Bech et al., 1996. Psychother. Psychosom. 65, 183-190.).
  
  
  METHODS
  Eight hundred and ninety four consecutive inpatients and day-patients at a psychiatric facility completed the DI-5, WHO-5, SF-36 (Ware et al., 1993. SF-36 Health Survey: Manual and Interpretation Guide. The Health Institute, New England Medical Centre, Boston, MA.) and DASS-21 (Lovibond and Lovibond, 1995b. Manual for the Depression Anxiety Stress Scales. Psychology Foundation, Sydney, Australia.; Ware et al., 1993. SF-36 Health Survey: Manual and Interpretation Guide. The Health Institute, New England Medical Centre, Boston, MA.) routinely during treatment.
  
  
  RESULTS
  The DI-5 was shown to be a measure with high reliability and validity. In addition criteria for clinically significant recovery are presented with an example implementation of a Clinical Significance Monitoring system. Finally, the latent structure of the DI-5 is established as a uni-dimensional index of affective disorder.
  
  
  CONCLUSIONS
  The results may be generalized to samples with primary diagnoses of depressive and/or anxiety disorders though assessment of the DI-5 as a measure of treatment response is warranted in patients with other primary diagnoses.
  
  
  CONCLUSIONS
  The current study indicates that the DI-5 is a quick to administer and interpret, reliable and valid measure for assessing patient outcome that is appropriate for use in monitoring patient change.
authors.affiliation: School of Psychology, The University of Western Australia, Crawley, WA, Australia. Electronic address: kale.dyer@gmail.com.
authors.forename: Kale
authors.initials: K
authors.lastname: Dyer
authors.forename: Geoff
authors.initials: G
authors.lastname: Hooke
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Page
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001007:Anxiety / Q000175:diagnosis / Q000523:psychology; D003863:Depression / Q000175:diagnosis / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019964:Mood Disorders / Q000175:diagnosis / Q000523:psychology; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D015203:Reproducibility of Results; D055815:Young Adult
keywords: Clinical significance; Daily index 5; Outcome; Patient monitoring; Psychometrics