In their recent article, Costantini et al1 assert that their study "provides evidence that an active care management approach is superior to clinical practice guidelines alone in improving quality and efficiency of care in hospitalized patients with congestive heart failure." While this may be the case, their data suggest that the differences in outcomes noted were due to selection bias and not the impact of the care management team.
Clark R. Another Look at the Impact of a Disease Management on the Outcomes of Patients With Congestive Heart Failure. Arch Intern Med. 2001;161(18):2264. doi: