Clinical outcomes in low risk coronary artery disease patients treated with different limus-based drug-eluting stents--a nationwide retrospective cohort study using insurance claims database

PLoS One. 2015 Apr 7;10(4):e0122860. doi: 10.1371/journal.pone.0122860. eCollection 2015.

Abstract

The clinical outcomes of different limus-based drug-eluting stents (DES) in a real-world setting have not been well defined. The aim of this study was to investigate the clinical outcomes of three different limus-based DES, namely sirolimus-eluting stent (SES), Endeavor zotarolimus-eluting stent (E-ZES) and everolimus-eluting stent (EES), using a national insurance claims database. We identified all patients who received implantation of single SES, E-ZES or EES between January 1, 2007 and December 31, 2009 from the National Health Insurance claims database, Taiwan. Follow-up was through December 31, 2011 for all selected clinical outcomes. The primary end-point was all-cause mortality. Secondary end-points included acute coronary events, heart failure needing hospitalization, and cerebrovascular disease. Cox regression model adjusting for baseline characteristics was used to compare the relative risks of different outcomes among the three different limus-based DES. Totally, 6584 patients were evaluated (n=2142 for SES, n=3445 for E-ZES, and n=997 for EES). After adjusting for baseline characteristics, we found no statistically significant difference in the risk of all-cause mortality in three DES groups (adjusted hazard ratio [HR]: 1.14, 95% confidence interval [CI]: 0.94-1.38, p=0.20 in E-ZES group compared with SES group; adjusted HR: 0.77, 95% CI: 0.54-1.10, p=0.15 in EES group compared with SES group). Similarly, we found no difference in the three stent groups in risks of acute coronary events, heart failure needing hospitalization, and cerebrovascular disease. In conclusion, we observed no difference in all-cause mortality, acute coronary events, heart failure needing hospitalization, and cerebrovascular disease in patients treated with SES, E-ZES, and EES in a real-world population-based setting in Taiwan.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cohort Studies
  • Coronary Artery Disease / drug therapy*
  • Coronary Artery Disease / economics*
  • Databases, Factual*
  • Drug-Eluting Stents*
  • Endpoint Determination
  • Female
  • Humans
  • Insurance / statistics & numerical data*
  • Male
  • Middle Aged
  • Retrospective Studies
  • Risk
  • Sirolimus / therapeutic use*
  • Taiwan
  • Treatment Outcome

Substances

  • Sirolimus

Grants and funding

This study was supported by grants from the Science and Technology Unit, Ministry of Health and Welfare, Executive Yuan, Taiwan (DOH101-TD-B-111-001 and DOH102-TD-B-111-001). The funding agency did not have any input in study design, data analysis, and interpretation of findings, or in the decision to submit the manuscript for publication.