Bottomup And Topdown Case Identification

The other way in which instruments differ is whether they are diagnosis-driven or symptom-driven. Instruments that are diagnosis-driven do not require to elicit the same set of symptoms in each case in order to establish the appropriate diagnostic category. All they have to do is to confirm that the required diagnostic criteria are met. DIS and CIDI are examples of such instruments. The advantage is that they can cut corners by not having to check out all symptoms once a diagnosis has been made: this is often the way clinicians work in their ordinary practice.

Symptom-driven instruments are exhaustive in their coverage of symptoms, and only then do they use the symptomatic information to check whether diagnostic criteria have been met (for example, SCAN and CIS-R). This has two advantages. The first is that, in theory, it should be possible to use the symptom information to serve a new algorithm if the diagnostic criteria were changed. This might be extremely arduous in practice, although attempts of this sort have been made (e.g., Murphy, 1994). The other advantage is of particular relevance to the study of the common affective disorders. Establishing whether or not a set range of symptoms is present allows an overall symptoms count to be made, and this is useful when it is appropriate to study the distributions of symptoms in the general population, as in the study by Melzer and his colleagues (2002) mentioned above.

Letting Go, Moving On

Letting Go, Moving On

Learning About Letting Go, Moving On Can Have Amazing Benefits For Your Life And Success! Don't be held back by the past - face your guilt and fears and move on! Letting go is merely arriving at a decision, no more allowing something from the past tense to influence your life today or to cut down your inner sense of peace and welfare.

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