A pproximately 20% of all American patients die during or shortly after a stay in the ICU, 1 the majority of whom do so in the context of a decision to forego life-sustaining therapy. [2][3][4] Once families and caregivers decide to withdraw life support, experts in end-of-life communication advocate for clinicians to inform families of what they should expect during their loved one's dying process. 5,6 This communication might include details about the expected myoclonus of dying patients, the potential for agonal respirations after discontinuation of mechanical ventilation, and the timing of death after withdrawal of life support. 6 Despite frequent family requests as well as expert recommendations for discussion of the postwithdrawal course, few data exist to guide clinicians in accurately conveying the anticipated course. [7][8][9] The majority of studies that examine the timing of death after withdrawal focus on patients with severe neurologic injury in the context of organ donation after cardiac death 10 or on whether the use of analgesics and sedatives during the dying process hasten death in patients who are critically ill. 7,11 These studies, among others, 12,13 dedicate little attention to other factors that may infl uence the timing of death after withdrawal of life support, such as age, severity of illness, or underlying diagnosis. Characterization of the factors that predict time to death may inform familycaregiver communication at the end of life and alleviate some of the anxiety and frustration resulting