Sleep apnea can endanger the welfare of patients, as well as others. Sleepiness and fatigue from untreated OSA impair coordination, reaction times, and the ability to think and concentrate, causing or contributing to an increased likelihood of motor vehicle and workplace accidents. In fact, sleep-deprived individuals perform as badly or worse on a hand-eye coordination task as those who are moderately intoxicated. According to the National Highway Traffic Safety Administration, sleepy drivers are responsible for an estimated 100,000 nonfatal injuries and 1,500 traffic fatalities each year. Research indicates that proper treatment of OSA reduces the incidence of fall-asleep crashes to the level of those involving the general population. In short, driver fatigue can be as dangerous and as preventable as drunk driving.