

Source for
appendectomy,
bariatric surgery,
women's health,
and maternity care:
Individual states (
AZ,
CA,
FL,
IA,
MA,
MD,
ME,
NJ,
NV,
NY,
OR,
PA,
TX,
UT,
VA,
WA,
and WI
)
for years 2004 - 2006.
Source for all other procedures: Centers for Medicare and Medicaid Services for years 2005 - 2007.