Reliability of data collection for the National Comprehensive Cancer Network (NCCN) non-Hodgkin lymphoma (NHL) multi-center outcomes database: A methodological approach

6525 Background: Clinical trials and outcomes studies often rely on non-physicians to abstract complex data from medical records. We assessed the reliability of chart abstraction among personnel groups in a multi-center outcomes study of indolent/aggressive NHL treated in NCCN centers. Methods: We developed 20 standardized charts of patients with newly-diagnosed NHL. Raters included 6 Clinical Research Associates from …