Jacqueline Baras Shreibati et al. JCHF 2017;j.jchf.2016.09.008 Comparison of Model Survival Curves With Registry Data The survival curves for LVAD and medical management are based on INTERMACS and MedaMACS registry data, respectively (12,14). INTERMACS = Interagency for Mechanically Assisted Circulatory Support; LVAD = left ventricular assist device; MedaMACS = Medical Arm of the Mechanically Assisted Circulatory Support. Jacqueline Baras Shreibati et al. JCHF 2017;j.jchf.2016.09.008 American College of Cardiology Foundation