It may still be large scale, and can be considered as one form of population screening.”Meanwhile, they describe case finding as “that form of screening of which the main object is to detect disease and bring patients to treatment, in contrast to epidemiological surveys,” which, in turn, simply detect and do not treat risk factors or abnormalities.4A 2008 WHO review of Wilson and Jungner’s work highlighted the need for “scientific evidence of screening programme effectiveness” along with “quality assurance, with mechanisms to minimize potential risks of screening” and a need to “ensure informed choice, confidentiality and respect for autonomy.”5So how is case finding different from population screening? WHO has described the search for tuberculosis among high risk populations as case finding.6 The term is also used to describe diagnoses made when a patient attends a healthcare provider for an initially unrelated reason for example, if a person attends with painful knees, noting contributory obesity may lead to a new diagnosis of hypertension. Asking patients about memory problems when they have no related symptoms is, however, very different from a doctor taking note and acting on symptoms or signs of possible memory loss.There is a lack of an agreed, formal definition of case finding. The dementia case finding programme is a form of population screening.
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