Teaching hospitals are recognized for treating rare diseases, but thei
r value in caring for common illnesses is less clear. To assess qualif
y of care for congestive heart failure and pneumonia, we reviewed the
medical records of Medicare beneficiaries in major teaching, other tea
ching, and nonteaching hospitals in four states. Overall quality was r
ated better in major and other teaching hospitals than in nonteaching
hospitals by physician reviewers and explicit process criteria, but th
e results varied for different subsets of explicit measures. Future st
udies should assess whether outcomes differ between teaching and nonte
aching hospitals.