. Author manuscript; available in PMC: 2018 Dec 19.

Published in final edited form as: Inflamm Bowel Dis. 2017 Dec 19;24(1):45–53. doi: 10.1093/ibd/izx007

TABLE 1.

Patient Variables

Variables included in both models	Demographics: age, sex, race.
	Labs: white blood cell count (WBC), hemoglobin, hematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular hemoglobin concentrate (MCHC), platelets, sodium, potassium, glucose, blood urea nitrogen (BUN), serum creatinine, calcium, bicarbonate, chloride, albumin, aspartate aminotransferase (AST), alanine aminotransferase (ALT), total protein, alkaline phosphatase, bilirubin.
	Immunosuppressive (escalation) med: included any immunosuppressive medication such as thiopurine, methotrexate, anti-TNF, or combination therapy.
Additional variables for longitudinal model	Previous hospitalization or steroid prescription: number of previous outpatient corticosteroids or hospitalizations.
Additional variables for longitudinal model	Calculated: mean, maximum, mean of the differential, maximum of the differential, and mean of acceleration of labs.