UC severity ratings. Patients’ self-reported classification of disease severity: patients were asked how they would personally describe the severity of their UC overall, regardless of how their doctor described it. Physicians’ and nurses’ assessment of symptom severity among their caseloads: physicians and nurses were asked what percentage of their current UC patients had mild, moderate, or severe disease. Data may not add up to 100% due to rounding. UC, ulcerative colitis.