Table 1

Baseline and Descriptive Characteristics of Patients Receiving Stress Testing Between 61 and 365 Days Post-Percutaneous Coronary Revascularization

Total (N = 68,292)(1) Exercise ECG (n = 5,034)(2) Exercise Nuclear or Echo (n = 31,965)p Value 1 vs. 2(3) Exercise Nuclear (n = 26,679)(4) Exercise Echo (n = 5,286)p Value 3 vs. 4(5) Pharm Imaging (n = 31,293)p Value 2 vs. 5
Demographic and clinical characteristics at time of index PCI
 Age, yrs, median (Q1–Q3)73 (68–78)73 (68–78)72 (68–77)<0.00172 (68–77)72 (68–77)0.9875 (70–80)<0.001
 75 years or older43.840.036.0<0.00136.035.80.7952.5<0.001
 Female41.134.634.10.4634.034.70.2949.4<0.001
 White race88.988.089.50.00289.689.20.4088.5<0.001
 BMI, median (Q1–Q3), kg/m228 (25–31)28 (25–31)27 (25–31)0.0827 (25–31)27 (25–30)0.00728 (25–32)<0.001
 Previous MI (>7 days)21.618.919.70.1720.018.20.00224.0<0.001
 History of heart failure9.16.75.70.0045.84.80.00213.0<0.001
 Family history of CAD20.420.120.90.1821.219.20.00120.00.003
 Hypertension80.477.377.00.6477.574.9<0.00184.4<0.001
 Diabetes mellitus29.827.424.7<0.00124.923.50.0335.5<0.001
 GFR <30 ml/min/1.73m2 or dialysis dependent2.71.71.60.031.61.40.304.0<0.001
 PVD12.49.09.10.799.28.30.0316.4<0.001
 Statin use75.775.175.50.6175.973.3<0.00176.10.06
 Current smoker10.99.610.50.0610.410.40.6711.4<0.001
 Previous revascularization38.232.135.6<0.00136.033.60.00141.8<0.001
Cardiac status at time of PCI presentation<0.0010.007<0.001
 Asymptomatic15.012.014.514.813.516.0
 Atypical chest pain8.17.58.08.27.18.3
 Stable angina18.316.918.718.519.518.1
 Unstable angina33.530.933.133.133.434.3
 NSTEMI14.417.213.813.714.114.6
 STEMI10.715.611.811.712.48.7
 Multivessel disease52.652.050.40.0351.146.5<0.00155.0<0.001
PCI procedure and facility characteristics
 PCI status<0.001<0.001<0.001
 Elective53.447.353.153.750.454.7
 Urgent34.736.234.136.136.135.0
 Emergency11.816.512.712.513.510.2
 Salvage0.10.10.10.10.10.1
 Drug-eluting stent used75.775.677.40.00477.576.90.3673.9<0.001
 Census Division<0.001<0.001<0.001
 New England5.110.95.96.24.83.3
  Middle Atlantic7.04.87.27.65.17.0
  East North Central23.422.022.422.820.524.6
  West North Central9.84.510.09.711.310.4
  South Atlantic24.020.624.727.013.223.9
  East South Central7.011.86.77.05.16.7
  West South Central7.86.97.06.87.88.8
  Mountain5.77.15.64.610.45.5
  Pacific10.311.310.68.421.99.8
Testing characteristics
 Time from index PCI to stress test, median days (Q1–Q3)186 (119–260)122 (89–178)186 (119–258)<0.001188 (122–261)174 (109–245)<0.001196 (128–271)<0.001

Values are median (Q1–Q3) or %.

BMI = body mass index; CABG = coronary artery bypass graft; CAD = coronary artery disease; CMS = Centers for Medicare and Medicaid Services; ECG = electrocardiography; GFR = glomerular filtration rate; MI = myocardial infarction; NSTEMI = non–ST-segment elevation myocardial infarction; PCI = percutaneous coronary intervention; PVD = peripheral vascular disease; Q = quartile; STEMI = ST-segment elevation myocardial infarction.

  • Pharmacological (Pharm) nuclear and echocardiography (Echo) tests were combined because of small sample size in pharmacological echocardiography arm (n = 711).