Because of a change in data, several systems were listed in the wrong order in the 1997 Multi-unit Providers Survey's ranking by net patient revenues (May 26, p. 64). Adventist Health System should have been ranked 20, SSM Health Care System should have been 21, and Detroit Medical Center should have been 22. In addition, the financial information provided by New London, Conn.-based Mariner Health was incorrectly listed in a chart of not-for-profit companies on p. 78. Mariner is a for-profit company and should have been in the list on p. 74.
The National Committee for Quality Health Care and the Healthcare Leadership Council are separate organizations (May 19, p. 16).