The Wisconsin Sleep Cohort Study estimated in 1993 that roughly one in every 15 Americans was affected by at least moderate<unk> . It also estimated that in middle-age as many as 9% of women and 24% of men were affected, undiagnosed and untreated. The costs of untreated<unk>  reach further than just health issues. It is estimated that in the U.S., the average untreated<unk>  patient's annual health care costs $1,336 more than an individual without<unk> . This may cause $3.4 billion/year in additional medical costs. Whether medical cost<unk> vings occur with treatment of<unk>  remains to be determined.
Sleep apnea
Insomnia
Central sleep apnea
Narcolepsy
Obstructive sleep apnea
Hyperventilation syndrome
Obesity hypoventilation syndrome
Central hypoventilation syndrome