Criteria for screening
These are defined by the WHO as follows:
- the condition screened for should be an important one
- there should be an acceptable treatment for patients with the disease
- the facilities for diagnosis and treatment should be available
- there should be a recognised latent or early symptomatic stage
- there should be a suitable test or examination which has few false positives - specifity - and few false negatives - sensitivity
- the test or examination should be acceptable to the population
- the cost, including diagnosis and subsequent treatment, should be economically balanced in relation to expenditure on medical care as a whole
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