External validation of the TIMI risk score for secondary cardiovascular events among patients with recent myocardial infarction.

Published

Journal Article

BACKGROUND AND AIMS: Risk stratification of patients with recent myocardial infarction (MI) for subsequent cardiovascular (CV) events helps identify patients most likely to benefit from secondary prevention therapies. This study externally validated a new risk score (TRS2˚P) for secondary events derived from the TRA2°P-TIMI 50 trial among post-MI patients from two large health care systems. METHODS: This retrospective cohort study included 9618 patients treated for acute MI at either the Cleveland Clinic (CC) or Geisinger Health System (GHS) between 2008 and 2013. Patients with a clinic visit within 2-52 weeks of MI were included and followed for CV death, repeat MI, and ischemic stroke through electronic medical records (EMR). The TRS2˚P is based on nine factors determined through EMR documentation. Discrimination and calibration of the TRS2˚P were quantified in both patient populations. RESULTS: MI patients at CC and GHS were older, had more comorbidities, received fewer medications, and had higher 3-year event rates compared to subjects in the TRA2°P trial: 31% (CC), 33% (GHS), and 10% (TRA2°P-TIMI 50). The proposed risk score had similar discrimination across the three cohorts with c-statistics of 0.66 (CC), 0.66 (GHS), and 0.67 (TRA2°P-TIMI 50). A strong graded relationship between the risk score and event rates was observed in all cohorts, though 3-year event rates were consistently higher within TRS2°P strata in the CC and GHS cohorts relative to TRA2˚P-TIMI 50. CONCLUSIONS: The TRS2˚P demonstrated consistent risk discrimination across trial and non-trial patients with recent MI, but event rates were consistently higher in the non-trial cohorts.

Full Text

Duke Authors

Cited Authors

  • Williams, BA; Chagin, KM; Bash, LD; Boden, WE; Duval, S; Fowkes, FGR; Mahaffey, KW; Patel, MD; D'Agostino, RB; Peterson, ED; Kattan, MW; Bhatt, DL; Bonaca, MP

Published Date

  • May 2018

Published In

Volume / Issue

  • 272 /

Start / End Page

  • 80 - 86

PubMed ID

  • 29579671

Pubmed Central ID

  • 29579671

Electronic International Standard Serial Number (EISSN)

  • 1879-1484

Digital Object Identifier (DOI)

  • 10.1016/j.atherosclerosis.2018.03.026

Language

  • eng

Conference Location

  • Ireland