[Multi-axial system of chapter V (F) of ICD-10. Initial results of a multicenter practicability and reliability study].

With the introduction of operationalized diagnostic systems the multiaxial approach became a more important issue. The proposed multiaxial system of ICD-10 consists of three axes: on axis I psychiatric diagnoses are made according to the ICD-10 Clinical Guidelines or Diagnostic Criteria for Research. Axis II (Disability Diagnostic Scale, DDS) deals with impairment of psychosocial functioning. On axis III environmental/circumstantial and personal lifestyle management factors are rated. As part of the WHO international field trial, applicability and inter-rater reliability of the system were examined in seven German-speaking centers. In addition axis II was compared with the corresponding axis of DSM-III-R (Global Assessment of Functioning Scale). 45 German clinicians rated 12 case histories written in English (provided by WHO) with 488 ratings altogether. Diagnoses on axis I with an average percentage agreement of 65.6% and a mean kappa of 0.50 showed a moderate inter-rater reliability. For axis II the intraclass coefficient was 0.62, and that for the corresponding DSM-III axis was 0.65: both these axes thus also had a moderate inter-rater reliability. There was a close correlation between the subscales and the global assessment of axis II there was. Wide variation was found in the psychosocial circumstances on axis III, the mean kappa value being 0.16. In the discussion proposals for the revision process for the multiaxial ICD-10 system are made.