Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
JAMA. 2009 Aug 19;302(7):767-73. doi: 10.1001/jama.2009.1178.

Reduction in acute myocardial infarction mortality in the United States: risk-standardized mortality rates from 1995-2006.

Author information

  • 1Section of Cardiovascular Medicine, Yale University School of Medicine, 1 Church St, Ste 200, New Haven, CT 06510, USA. harlan.krumholz@yale.edu

Abstract

CONTEXT:

During the last 2 decades, health care professional, consumer, and payer organizations have sought to improve outcomes for patients hospitalized with acute myocardial infarction (AMI). However, little has been reported about improvements in hospital short-term mortality rates or reductions in between-hospital variation in short-term mortality rates.

OBJECTIVE:

To estimate hospital-level 30-day risk-standardized mortality rates (RSMRs) for patients discharged with AMI.

DESIGN, SETTING, AND PATIENTS:

Observational study using administrative data and a validated risk model to evaluate 3,195,672 discharges in 2,755,370 patients discharged from nonfederal acute care hospitals in the United States between January 1, 1995, and December 31, 2006. Patients were 65 years or older (mean, 78 years) and had at least a 12-month history of fee-for-service enrollment prior to the index hospitalization. Patients discharged alive within 1 day of an admission not against medical advice were excluded, because it is unlikely that these patients had sustained an AMI.

MAIN OUTCOME MEASURE:

Hospital-specific 30-day all-cause RSMR.

RESULTS:

At the patient level, the odds of dying within 30 days of admission if treated at a hospital 1 SD above the national average relative to that if treated at a hospital 1 SD below the national average were 1.63 (95% CI, 1.60-1.65) in 1995 and 1.56 (95% CI, 1.53-1.60) in 2006. In terms of hospital-specific RSMRs, a decrease from 18.8% in 1995 to 15.8% in 2006 was observed (odds ratio, 0.76; 95% CI, 0.75-0.77). A reduction in between-hospital heterogeneity in the RSMRs was also observed: the coefficient of variation decreased from 11.2% in 1995 to 10.8%, the interquartile range from 2.8% to 2.1%, and the between-hospital variance from 4.4% to 2.9%.

CONCLUSION:

Between 1995 and 2006, the risk-standardized hospital mortality rate for Medicare patients discharged with AMI showed a significant decrease, as did between-hospital variation.

Comment in

PMID:
19690309
[PubMed - indexed for MEDLINE]
PMCID:
PMC3349070
Free PMC Article

Images from this publication.See all images (1)Free text

Figure
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Silverchair Information Systems Icon for PubMed Central
    Loading ...
    Write to the Help Desk