Objective
To assess the association between the common quality metric of 30-day mortality and
mortality at 60 days, 90 days, and one year after coronary artery bypass grafting.
Design
A retrospective cohort study, with multivariate logistic regression to assess association
among mortality outcomes.
Setting
Hospitals participating in Medicare and reporting data within the Centers for Medicare
and Medicaid Services Limited Data Set between April 1, 2016, and March 31, 2017.
Participants
A total of 37,036 patients undergoing surgery at 394 hospitals.
Intervention
None.
Measurements and Main Results
Mortality rates were 1.0%-to-3.1% for the top and bottom quartile of hospitals at
30 days. At one year, the top 25th percentile of hospitals had mortality rates averaging
3.9%; while hospitals below the 75th percentile had mortality rates averaging 7.6%.
Twenty-three percent of hospitals in the top quartile at 30 days were no longer in
the top quartile at 60 days. At one year, only 48% of hospitals that were in the top
quartile at 30 days remained in the top quartile. The correlation between mortality
rates at 30 days and the reported points was assessed using Spearman's rho. The R
value between mortality at 30 days and mortality at one year was 0.53, which improved
to 0.7 and 0.76 at 60 and 90 days.
Conclusions
Mortality at 30 days correlated poorly with mortality at one year. Hospitals that
were high- or low-performing at 30 days frequently were no longer within the same
performance group at one year.
Key Words
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Article info
Publication history
Published online: August 29, 2021
Footnotes
Funding: This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
Identification
Copyright
© 2021 Elsevier Inc. All rights reserved.
ScienceDirect
Access this article on ScienceDirectLinked Article
- Outcome After Cardiac Surgery: The Devil Is in the DetailsJournal of Cardiothoracic and Vascular AnesthesiaVol. 36Issue 1
- PreviewCardiac surgery entails sick patients undergoing major operations. Numerous preoperative, intraoperative, and postoperative factors profoundly influence outcome after cardiac surgery in complex ways (Table 1).1-5 Furthermore, cardiac surgery is associated with unique postoperative morbidities not found after noncardiac surgery, mostly from use of cardiopulmonary bypass (Table 1). Traditionally, mortality rates (usually at 30 days) for all surgical procedures (noncardiac and cardiac) have been used to evaluate numerous things: the procedure itself, surgeon, hospital, etc.
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