The names, medical record numbers, and date/time of admission of all patients admitted to the MICU during the data collection period were recorded in a log book. Comparison of data in the log book with hospital computerized records revealed no missed patients during the data collection period. The MICU critical care fellows maintained a concurrent log book with Acute Physiology and Chronic Health Evaluation (APACHE) II scores,2 primary diagnoses, ICU survival, and resuscitation status. APACHE II scores were calculated by first-year residents 24 h after admission to the MICU with the use of a web-based scoring tool. To facilitate disease-specific comparisons, patients were grouped into one of six frequent admission categories: sepsis/septic shock, respiratory failure, cardiac disease (including cardiac arrest, cardiogenic shock, congestive heart failure, and hypertensive urgency/emergency), gastrointestinal bleed, neurologic disorders (including seizures and altered mental status of unclear cause), and other (including renal failure, liver failure, electrolyte imbalance, diabetic ketoacidosis, drug overdose, alcohol withdrawal, angioedema, and drug desensitization). Resuscitation status was defined as either full code or do not resuscitate. In the latter case, cardiopulmonary resuscitation, including chest compressions and defibrillation, were withheld in the event of cardiac arrest.