Patients with sleep apnoea also experience subjectively reduced quality of life and functioning, measured by general scales such as the SF-36, as well as disease-specific indices such as the Functional Outcomes of Sleep Questionnaire
and the Calgary Sleep Apnoea Quality of Life Index.
Respironics, Inc., has incorporated new technology--Encore(r) SmartCard(r) with FOSQ (Functional Outcomes of Sleep Questionnaire
)--into its next-generation sleep therapy CPAP (Continuous Positive Airway Pressure) and Smart CPAP systems.
The greatest gain in improvement in the Epworth Sleepiness Scale to a value less than 11 was with 4 h use/night; while 6 h nightly use produced the largest proportion of individuals who had a value greater than 7.5 m on the Multiple Sleep Latency Test, and 7.5 h use resulted in the highest number of participants with normal values on the Functional Outcomes of Sleep Questionnaire
, a measure of daily functioning.