“…The study population was comparable in age, sex ratio, and the Glasgow Coma Scale score to previously reported populations of comatose patients as in the Study to Understand Prognoses and Preferences for Outcomes and Risks of Treatments (SUPPORT) cohort. SUPPORT, the largest previously available cohort of 596 non-traumatic comatose patients, studied factors such as high risk of death and severe disability [1][2][3][4][5][6][7][8]. However, the SUPPORT cohort excluded drug intoxication and metabolic causes of coma [4].…”