The structured interview for anorexic and bulimic disorders for DSM-IV and ICD-10 (SIAB-EX): reliability and validity

Eur Psychiatry. 2001 Feb;16(1):38-48. doi: 10.1016/s0924-9338(00)00534-4.


Objective: For reliable and valid assessment and diagnostic categorization of eating disorders, self-report measures have considerable limitations. A semi-structured interview - the SIAB-EX - was developed for a more reliable and valid assessment of eating disorders.

Methods: One study (videotapes of 31 inpatients, seven raters) was made to establish inter-rater reliability; in another study with 80 patients the SIAB-EX was compared to another semi-structured interview designed for comparable purposes (EDE). In a third study data was obtained on 377 eating disorder patients seeking treatment to explore discriminant and convergent (construct) validity using the following self-rating scales: EDI, TFEQ, SCL-90, BDI, and the PERI Demoralization Scale.

Results: Inter-rater reliability of dichotomous ratings was good with mean kappa values of.81 (current) and.85 (past). Comparison of the SIAB-EX with the EDE generally showed quite similar results and higher intercorrelation of the total scale (.77). There are, however, a number of differences between the two scales, which are discussed in detail. Construct validity of the SIAB-EX was established.

Conclusion: Inter-rater reliability was good. Convergent and discriminant (construct) validity of the SIAB-EX was demonstrated. The constructs assessed by the SIAB and its subscales and items are discussed in the context of their correlations with other well-known scales.

MeSH terms

  • Adaptation, Psychological
  • Adult
  • Anorexia Nervosa / diagnosis*
  • Anorexia Nervosa / psychology
  • Anorexia Nervosa / rehabilitation
  • Body Image
  • Bulimia / diagnosis*
  • Bulimia / psychology
  • Bulimia / rehabilitation
  • Female
  • Hospitalization
  • Humans
  • Interview, Psychological*
  • Life Change Events
  • Male
  • Observer Variation
  • Psychiatric Status Rating Scales* / statistics & numerical data
  • Reproducibility of Results
  • Retrospective Studies
  • Severity of Illness Index