How food and drink affect your sleep. What you eat and drink before bed can affect your sleep. For example, foods containing the amino acid tryptophanâa building block of the sleep-related chemical serotoninâcould potentially make you drowsy, although evidence is mixed as to whether the amount in food is enough to change your sleep.
The study estimates lifetime societal savings (net present value) of about $12 billion from the more than 600,000 total knee replacement surgeries performed each year in the U.S. These societal savings primarily accrue to patients and employers.
In Dallas, Texas, a knee replacement could cost between $16,772 and $61,585 (267 percent cost variation) depending on the hospital. Similar trends also were seen for the average typical cost for a total hip replacement procedure, which averaged $30,124.n 2011 there were 645,062 typical hip replacements and 306,600 typical knee replacements performed in the U.S., according to a report from the American Academy of Orthopaedic Surgeons. The phenomenon of extreme price variation in healthcare can have obvious financial consequences for individuals and employers.