Diagnostic tool
In medicine, insomnia is measured using the Athens insomnia scale. It was introduced in the year 2000 by a group of researchers from Athens, Greece to assess the insomnia symptoms in patients with sleep disorders.
It is measured by assessing eight factors, five related to nocturnal sleep and three related to daytime dysfunction. These are rated on a 0–3 scale and tabulated into a cumulative score. A score of 6 or higher is used to establish the diagnosis of insomnia.
The Athens insomnia scale is considered to be an effective tool in sleep analysis, and it is validated in various countries by testing it on local patients. 
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