To the Editor: Dr Krumholz and colleagues1 describe HealthGrades as "one of the most ambitious
health ratings resources available today." We agree. Our company continually
strives to improve our methodology and welcomes the attempt to validate our
methods. While we appreciate the efforts of Krumholz et al, their study is
flawed in several important respects.
First, Krumholz et al analyzed different data than those on which our
report is based. Their exclusions amount to more than half of the patients
HealthGrades studied. These differences in the populations of patients introduce
systematic bias in the ratings Krumholz et al assigned to hospitals. Differences
in the original system become blurred, and therefore their categories are
Some tools below are only available to our subscribers or users with an online account.
Download citation file:
Web of Science® Times Cited: 2
Customize your page view by dragging & repositioning the boxes below.
More Listings atJAMACareerCenter.com >
Enter your username and email address. We'll send you a link to reset your password.
Enter your username and email address. We'll send instructions on how to reset your password to the email address we have on record.
Athens and Shibboleth are access management services that provide single sign-on to protected resources. They replace the multiple user names and passwords necessary to access subscription-based content with a single user name and password that can be entered once per session. It operates independently of a user's location or IP address. If your institution uses Athens or Shibboleth authentication, please contact your site administrator to receive your user name and password.