Table 1.

Definitions of the Interventions Examined

Antibiotic—bacterial antimicrobial agent (Pneumocystis pneumonia prophylaxis not included)

Anticonvulsant—antiepileptic drug

Antifungal—fungal antimicrobial agent

Antiviral—viral antimicrobial agent

Blood products—PRBCs, platelets, FFP, other blood bank products

Chemotherapy—medical intervention directed toward managing the cancer

Hemodialysis/CVVH—intermittent dialysis or continuous veno-venous hemofiltration

IVF—intravenous fluid provided for any reason

Lab draws—serum chemistries, CBC, other routine laboratory tests, etc.

Invasive mechanical ventilation—via endotracheal tube or tracheostomy

Oxygen—supplemental oxygen via nasal cannula or other mechanism

Pain medications—opioids, acetaminophen, NSAIDs, etc.

Parenteral nutrition—TPN/intravenous nutrition

Radiation therapy—any course of planned radiation therapy—palliative or otherwise

Steroids—corticosteroids including dexamethasone, prednisone

Surgery—any surgery

Vasopressor—inotrope

TPN, total parenteral nutrition; PRBCs, packed red blood cells; FFP, fresh frozen plasma; CBC, complete blood count.