Author + information
- Mark Hlatky, MD∗ ()
- ↵∗Health Research and Policy, Stanford University School of Medicine, HRP Redwood Building, Room 150, Stanford, California 94305
We appreciate the interest of Drs. Lundbye and Heller in our paper (1). They are concerned about the selection of patients for computed tomography angiography, positron emission tomography, and single-photon emission computed tomography, because there were many differences in the baseline characteristics of these groups. The baseline characteristics listed in Table 1 of our paper are for the entire study population, not the propensity score–matched patients used to compare the outcomes. The characteristics of the matched patients (Table 3 in our paper) are quite similar. Although propensity score matching may not fully adjust for patient selection, it largely corrects for the imbalances in baseline characteristics.
- American College of Cardiology Foundation