You might need to write a different request letter to ask someone who you should write to. In this case, still follow these steps for writing a request letter. Learn the format for a business letter. Your request letter should use the proper business letter format, as it is likely a formal request.
The Epworth Sleepiness Scale (ESS) is a scale intended to measure daytime sleepiness that is measured by use of a very short questionnaire. This can be helpful in diagnosing sleep disorders. It was introduced in 1991 by Dr Murray Johns of Epworth Hospital in Melbourne, Australia.
It is used to assess the severity of an individualâs sleep apnea. The AHI overlaps with the respiratory disturbance index (RDI), though the latter differs as it often includes other minor breathing difficulties. The AHI is part of the report from a standard sleep study for sleep apnea.