National Nursing Home Survey (NNHS)
The National Nursing Home Survey (NNHS) is a continuing series of national sample surveys of nursing homes, their residents, and their staff. Although each of these surveys emphasized different topics, they all provided some common basic information about nursing homes, their residents, and their staff. All nursing homes included in this survey had at least three beds and were either certified (by Medicare or Medicaid) or had a state license to operate as a nursing home.
See more information at http://www.cdc.gov/nchs/nnhs.htm