Classification Systems: ICD A03 Flashcards
What is a strength of the ICD?
There is improved reliability between the ICD-9 to ICD-10
What did Ponizovsky et al (2006) use to test the reliability of the ICD 9 and ICD 10?
Positive Predictive Value (PPV) which is measuring the proportion of people who get the same diagnosis when reassessed.
PPV scores for schizophrenia increased from 68% in 1989 (ICD 9) to 94.2% in 2003 (ICD 10).
What is a further strength of the reliability of the ICD?
The ICD has good inter-rater reliability.
Galeazzi et al (2004) carried out a joint interview with 100 clients looking at psychosomatic symptoms. The Kappa values ranged from 0.69 to 0.97.
What is a strength of the validity of the ICD?
The ICD has good predictive validity for schizophrenia.
Mason et al (1997) compared different ways of making a diagnosis. The ICD-9 and ICD-10 were reasonably good at predicting disability in 99 people with schizophrenia 13 years later.
This shows that the initial diagnosis was useful and meaningful i terms of its ability to accurately predict future outcomes.
What application value does the ICD-10 have?
It continues to be used by clinicians to effectively diagnose mental illness.
What issues and debates are related to both classification systems?
How psychology has developed over time.
Both the DSM and ICD have been revised a number of times in response to criticisms about reliability and validity.
