Author + information
Sawant AC, Josey K, Plomondon ME, Maddox TM, Bhardwaj A, Singh V, Rajagopalan B, Said Z, Bhatt DL, Corbelli J
Temporal Trends, Complications, and Predictors of Outcomes Among Nonagenarians Undergoing Percutaneous Coronary Intervention: Insights From the Veterans Affairs Clinical Assessment, Reporting, and Tracking Program
J Am Coll Cardiol Intv 2017;10:1295–303.
There is an error on page 1297 (right column, first and second paragraphs under the Methods section).
The text reads as follows:
We opted to use a frailty model to estimate the hazard ratios of mortality to account for significant differences between catheterization laboratory variability. A multivariate frailty model of 30-day mortality post-procedure adjusted for age (dichotomized as <90 and ≥90 years) and additional NCDR CathPCI covariates was fit to the cohort.
Next, a multivariate frailty model was fit for 1-year mortality adjusting for NCDR points among patients who survived >30 days. Thus, patients who died within the first 30 days after the initial procedure were omitted from the 1-year analysis. Frailty models were also fit for the nonagenarian subgroup adjusted for NCDR points using the same procedure discussed earlier with respect to 30-day and 1-year mortality.
It should have read as follows:
Two hierarchical logistic regression models were fit to 30-day and 1-year all-cause mortality using generalized estimating equations adjusting for age (dichotomized as <90 and ≥90 years) and NCDR CathPCI risk score. The 1-year analysis excluded patients who died within the first 30 days post-index procedure. Outcomes were clustered by catheterization lab to account for significant correlation between patients within the same catheterization laboratory.
Next, a frailty model was fit to 30-day all-cause mortality adjusted for NCDR CathPCI risk score among the nonagenarian patient subgroup. A frailty model was also fit for 1-year mortality among nonagenarian patients adjusted for NCDR CathPCI risk score. Similar to the hierarchical logistic regression models, nonagenarian patients who died within the first 30 days after the initial procedure were omitted from the 1-year analysis. The random frailty terms are shared between patients at the same catheterization laboratory to account for significant variation in the rate of death between sites.
The online version has been corrected.
The authors apologize for the error.
- 2018 American College of Cardiology Foundation