This article has been retracted. Please see:
Author + information
Syncope in Adults With Pulmonary Arterial Hypertension. J Am Coll Cardiol 59 (2011) 863–7.
Rachel J. Le, MD, Eric R. Fenstad, MD, Hilal Maradit-Kremers, MD, Robert B. McCully, MD, Robert P. Frantz, MD, Michael D. McGoon, MD, Garvan C. Kane, MD, PhD.
Department of Medicine, Mayo Clinic, Rochester, Minnesota; and the Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota.
Available online August 8, 2011.
Reason: This article has been retracted at the request of the authors, because of a data entry error, which is fundamental to the study findings. As background, this was a clinical study where a specific variable was tested in a large database. The process involved merging a variable (presence or absence of syncope) from one electronic source with an alternate electronic database of patients with pulmonary arterial hypertension and assessing associations and outcomes. In proceeding to design a follow-up study to this work, Dr. Le went back to the original source file to abstract new data. In doing this she identified a ‘cut-and paste’ error in which the column of syncope data was transferred incorrectly where syncope/no syncope variables were assigned to wrong subjects. This led to a critical error that then got carried forward and a fundamental misclassification of syncope in the final study group. This error fundamentally affects the results, which now do not fully support the conclusions.