Affiliation: Columbia University
- Improved frequency resolution for characterization of complex fractionated atrial electrogramsEdward J Ciaccio
Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, NY, USA
Biomed Eng Online 11:17. 2012..Herein the spectral resolution of a recently described and relatively new spectral estimation technique is compared to the Fourier radix-2 implementation...
- A new LMS algorithm for analysis of atrial fibrillation signalsEdward J Ciaccio
Department of Medicine, Division of Cardiology, Columbia University Medical Center, New York, USA
Biomed Eng Online 11:15. 2012..In this study, an LMS algorithm utilizing the method of differential steepest descent is developed, and is tested by normalization of extrinsic features in complex fractionated atrial electrograms (CFAE)...
- Women, but not men, have prolonged QT interval if depressed after an acute coronary syndromeWilliam Whang
Center for Behavioral Cardiovascular Health, Columbia University Medical Center, New York, NY 10032, USA
Europace 14:267-71. 2012..Depression is a mortality risk marker for acute coronary syndrome (ACS) patients. We hypothesized that the QT interval, a predictor for risk of sudden cardiac death, was related to depressive symptoms in ACS...
- A new transform for the analysis of complex fractionated atrial electrogramsEdward J Ciaccio
Department of Medicine, Division of Cardiology, Columbia University, USA
Biomed Eng Online 10:35. 2011..Identification of these generators using efficient methods of representation and comparison would be useful for targeting catheter ablation sites to prevent arrhythmia reinduction...
- Depression and risk of sudden cardiac death and coronary heart disease in women: results from the Nurses' Health StudyWilliam Whang
Division of Cardiology, Columbia University Medical Center, 180 Fort Washington Avenue, New York, NY 10032, USA
J Am Coll Cardiol 53:950-8. 2009..We assessed the association between depression and sudden cardiac death (SCD) and cardiac events among individuals without baseline coronary heart disease (CHD)...
- Diabetes and outcomes of coronary artery bypass graft surgery in patients with severe left ventricular dysfunction: results from The CABG Patch Trial database. The CABG Patch Trial Investigators and CoordinatorsW Whang
Department of Medicine, New York Presbyterian Hospital, Columbia University, New York, USA
J Am Coll Cardiol 36:1166-72. 2000..We examined the relationship between diabetes mellitus and outcomes after coronary artery bypass graft (CABG) surgery in patients with severe left ventricular (LV) dysfunction...
- Mechanisms of death in the CABG Patch trial: a randomized trial of implantable cardiac defibrillator prophylaxis in patients at high risk of death after coronary artery bypass graft surgeryJ T Bigger
Columbia University, New York, NY, USA
Circulation 99:1416-21. 1999....
- Risk stratification for coronary bypass surgery in patients with left ventricular dysfunction: analysis of the coronary artery bypass grafting patch trial databaseM Argenziano
Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY, USA
Circulation 100:II119-24. 1999..This database was used to investigate the influence of symptomatic congestive heart failure (CHF) and angina on morbidity and mortality in CABG patients with ventricular dysfunction...
- Bayesian estimation of cost-effectiveness ratios from clinical trialsD F Heitjan
Division of Biostatistics, International Center for Health Outcomes and Innovation Research, Columbia University, New York, NY 10032, USA
Health Econ 8:191-201. 1999..We demonstrate the method by re-analysing three previously published clinical trials...
- Benefits and costs of screening Ashkenazi Jewish women for BRCA1 and BRCA2V R Grann
School of Public Health, and Department of Medicine, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
J Clin Oncol 17:494-500. 1999..To determine the survival benefit and cost-effectiveness of screening Ashkenazi Jewish women for three specific BRCA1/2 gene mutations...
- Problems with interval estimates of the incremental cost-effectiveness ratioD F Heitjan
Division of Biostatistics, International Center for Health Outcomes and Innovation Research, Columbia University, New York, New York, USA
Med Decis Making 19:9-15. 1999..A modification of the percentile bootstrap confidence interval that involves a reordering of the sample space provides a partial solution of the problem...
- Cost-effectiveness of vaccination against pneumococcal bacteremia among elderly peopleJ E Sisk
Columbia University School of Public Health, New York, NY 10032, USA
JAMA 278:1333-9. 1997..Clinical, epidemiologic, and policy considerations support updating the cost-effectiveness of pneumococcal vaccination for elderly people and targeting the evaluation only to prevention of pneumococcal bacteremia...
- Decision analysis of prophylactic mastectomy and oophorectomy in BRCA1-positive or BRCA2-positive patientsV R Grann
Herbert Irving Comprehensive Cancer Center of Columbia University, School of Public Health, New York, NY 10032, USA
J Clin Oncol 16:979-85. 1998..Many question whether they should have prophylactic surgical procedures, ie, bilateral mastectomy and/or oophorectomy...