CMS has added death-rate information for hospitals across the country to its website. The data covers heart attack, heart failure and pneumonia death rates for U.S. hospitals for over a two-year period. Data is also posted on the performance of hospitals meeting patient needs in 26 other categories.
The pneumonia death rate for each hospital is adjusted to account for the hospitals' resources and the patients' level of illness. CMS's statistical formula results in 95 percent certainty that the hospital's death rates fall within the given range. Critics of CMS's methodology say it results in only a small number of hospitals that appear to be doing better or worse than the national average. The information can be accessed here.